crunchy-rocks/draw2d
2
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Test win32 api

Browse source
This commit is contained in:
Laurent Le Goff 2012-04-19 16:49:55 +02:00
parent 492dcdf86f
commit 041bb7cbbb
8 changed files with 547 additions and 401 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
postscript/interpreter.go
View file

@ -44,6 +44,10 @@ func NewDictionary(prealloc int) Dictionary {
return make(Dictionary, prealloc)
}
func (interpreter *Interpreter) SetGraphicContext(gc draw2d.GraphicContext) {
interpreter.gc = gc
}
func (interpreter *Interpreter) GetGraphicContext() draw2d.GraphicContext {
return interpreter.gc
}

16
postscript/operators_graphics.go
View file

@ -80,7 +80,7 @@ func arc(interpreter *Interpreter) {
}
func clippath(interpreter *Interpreter) {
log.Printf("clippath not yet implemented")
//log.Printf("clippath not yet implemented")
}
func stroke(interpreter *Interpreter) {
@ -198,9 +198,9 @@ func setcmybcolor(interpreter *Interpreter) {
}
func setdash(interpreter *Interpreter) {
offset := interpreter.PopInt()
dash := interpreter.PopArray()
log.Printf("setdash not yet implemented dash: %v, offset: %d \n", dash, offset)
interpreter.PopInt() // offset
interpreter.PopArray() // dash
//log.Printf("setdash not yet implemented dash: %v, offset: %d \n", dash, offset)
}
func setlinejoin(interpreter *Interpreter) {
@ -229,7 +229,7 @@ func setlinecap(interpreter *Interpreter) {
func setmiterlimit(interpreter *Interpreter) {
interpreter.PopInt()
log.Printf("setmiterlimit not yet implemented")
//log.Printf("setmiterlimit not yet implemented")
}
func setlinewidth(interpreter *Interpreter) {
@ -237,7 +237,7 @@ func setlinewidth(interpreter *Interpreter) {
}
func showpage(interpreter *Interpreter) {
log.Printf("showpage may be an implementation specific, override show page to generate multi page images")
//log.Printf("showpage may be an implementation specific, override show page to generate multi page images")
}
func show(interpreter *Interpreter) {
@ -275,12 +275,12 @@ func stringwidth(interpreter *Interpreter) {
func setflat(interpreter *Interpreter) {
interpreter.Pop()
log.Printf("setflat not yet implemented")
//log.Printf("setflat not yet implemented")
}
func currentflat(interpreter *Interpreter) {
interpreter.Push(1.0)
log.Printf("currentflat not yet implemented")
//log.Printf("currentflat not yet implemented")
}
// Coordinate System and Matrix operators

4
postscript/operators_misc.go
View file

@ -5,7 +5,7 @@
package postscript
import (
"log"
//"log"
)
//proc bind proc Replace operator names in proc with operators; perform idiom recognition
@ -19,7 +19,7 @@ func bind(interpreter *Interpreter) {
v, _ := interpreter.FindValueInDictionaries(s)
operator, isOperator := v.(Operator)
if v == nil {
log.Printf("Can't find def: %s\n", s)
// log.Printf("Can't find def: %s\n", s)
}
if isOperator {
values[i] = operator

222
wingui/winapi.go
View file

@ -1,154 +1,134 @@
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build windows
package wingui
import (
"fmt"
"os"
"syscall"
"unsafe"
"syscall"
"unsafe"
)
func abortf(format string, a ...interface{}) {
fmt.Fprintf(os.Stdout, format, a...)
os.Exit(1)
}
func loadDll(fname string) uint32 {
h, e := syscall.LoadLibrary(fname)
if e != 0 {
abortf("LoadLibrary(%s) failed with err=%d.\n", fname, e)
}
return h
}
func getSysProcAddr(m uint32, pname string) uintptr {
p, e := syscall.GetProcAddress(m, pname)
if e != 0 {
abortf("GetProcAddress(%s) failed with err=%d.\n", pname, e)
}
return uintptr(p)
}
type Wndclassex struct {
Size uint32
Style uint32
WndProc uintptr
ClsExtra int32
WndExtra int32
Instance uint32
Icon uint32
Cursor uint32
Background uint32
MenuName *uint16
ClassName *uint16
IconSm uint32
Size uint32
Style uint32
WndProc uintptr
ClsExtra int32
WndExtra int32
Instance syscall.Handle
Icon syscall.Handle
Cursor syscall.Handle
Background syscall.Handle
MenuName *uint16
ClassName *uint16
IconSm syscall.Handle
}
type Point struct {
X int32
Y int32
X uintptr
Y uintptr
}
type Msg struct {
Hwnd uint32
Message uint32
Wparam int32
Lparam int32
Time uint32
Pt Point
Hwnd syscall.Handle
Message uint32
Wparam uintptr
Lparam uintptr
Time uint32
Pt Point
}
const (
// Window styles
WS_OVERLAPPED = 0
WS_POPUP = 0x80000000
WS_CHILD = 0x40000000
WS_MINIMIZE = 0x20000000
WS_VISIBLE = 0x10000000
WS_DISABLED = 0x8000000
WS_CLIPSIBLINGS = 0x4000000
WS_CLIPCHILDREN = 0x2000000
WS_MAXIMIZE = 0x1000000
WS_CAPTION = WS_BORDER | WS_DLGFRAME
WS_BORDER = 0x800000
WS_DLGFRAME = 0x400000
WS_VSCROLL = 0x200000
WS_HSCROLL = 0x100000
WS_SYSMENU = 0x80000
WS_THICKFRAME = 0x40000
WS_GROUP = 0x20000
WS_TABSTOP = 0x10000
WS_MINIMIZEBOX = 0x20000
WS_MAXIMIZEBOX = 0x10000
WS_TILED = WS_OVERLAPPED
WS_ICONIC = WS_MINIMIZE
WS_SIZEBOX = WS_THICKFRAME
// Common Window Styles
WS_OVERLAPPEDWINDOW = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX
WS_TILEDWINDOW = WS_OVERLAPPEDWINDOW
WS_POPUPWINDOW = WS_POPUP | WS_BORDER | WS_SYSMENU
WS_CHILDWINDOW = WS_CHILD
// Window styles
WS_OVERLAPPED = 0
WS_POPUP = 0x80000000
WS_CHILD = 0x40000000
WS_MINIMIZE = 0x20000000
WS_VISIBLE = 0x10000000
WS_DISABLED = 0x8000000
WS_CLIPSIBLINGS = 0x4000000
WS_CLIPCHILDREN = 0x2000000
WS_MAXIMIZE = 0x1000000
WS_CAPTION = WS_BORDER | WS_DLGFRAME
WS_BORDER = 0x800000
WS_DLGFRAME = 0x400000
WS_VSCROLL = 0x200000
WS_HSCROLL = 0x100000
WS_SYSMENU = 0x80000
WS_THICKFRAME = 0x40000
WS_GROUP = 0x20000
WS_TABSTOP = 0x10000
WS_MINIMIZEBOX = 0x20000
WS_MAXIMIZEBOX = 0x10000
WS_TILED = WS_OVERLAPPED
WS_ICONIC = WS_MINIMIZE
WS_SIZEBOX = WS_THICKFRAME
// Common Window Styles
WS_OVERLAPPEDWINDOW = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX
WS_TILEDWINDOW = WS_OVERLAPPEDWINDOW
WS_POPUPWINDOW = WS_POPUP | WS_BORDER | WS_SYSMENU
WS_CHILDWINDOW = WS_CHILD
WS_EX_CLIENTEDGE = 0x200
WS_EX_CLIENTEDGE = 0x200
// Some windows messages
WM_CREATE = 1
WM_DESTROY = 2
WM_CLOSE = 16
WM_COMMAND = 273
// Some windows messages
WM_CREATE = 1
WM_DESTROY = 2
WM_CLOSE = 16
WM_COMMAND = 273
// Some button control styles
BS_DEFPUSHBUTTON = 1
// Some button control styles
BS_DEFPUSHBUTTON = 1
// Some colour constants
COLOR_WINDOW = 5
COLOR_BTNFACE = 15
// Some color constants
COLOR_WINDOW = 5
COLOR_BTNFACE = 15
// Default window position
CW_USEDEFAULT = 0x80000000 - 0x100000000
// Default window position
CW_USEDEFAULT = 0x80000000 - 0x100000000
// Show window default style
SW_SHOWDEFAULT = 10
// Show window default style
SW_SHOWDEFAULT = 10
)
var (
// Some globaly known cusrors
IDC_ARROW = MakeIntResource(32512)
IDC_IBEAM = MakeIntResource(32513)
IDC_WAIT = MakeIntResource(32514)
IDC_CROSS = MakeIntResource(32515)
// Some globally known cursors
IDC_ARROW = MakeIntResource(32512)
IDC_IBEAM = MakeIntResource(32513)
IDC_WAIT = MakeIntResource(32514)
IDC_CROSS = MakeIntResource(32515)
// Some globaly known icons
IDI_APPLICATION = MakeIntResource(32512)
IDI_HAND = MakeIntResource(32513)
IDI_QUESTION = MakeIntResource(32514)
IDI_EXCLAMATION = MakeIntResource(32515)
IDI_ASTERISK = MakeIntResource(32516)
IDI_WINLOGO = MakeIntResource(32517)
IDI_WARNING = IDI_EXCLAMATION
IDI_ERROR = IDI_HAND
IDI_INFORMATION = IDI_ASTERISK
// Some globally known icons
IDI_APPLICATION = MakeIntResource(32512)
IDI_HAND = MakeIntResource(32513)
IDI_QUESTION = MakeIntResource(32514)
IDI_EXCLAMATION = MakeIntResource(32515)
IDI_ASTERISK = MakeIntResource(32516)
IDI_WINLOGO = MakeIntResource(32517)
IDI_WARNING = IDI_EXCLAMATION
IDI_ERROR = IDI_HAND
IDI_INFORMATION = IDI_ASTERISK
)
//sys GetModuleHandle(modname *uint16) (handle uint32, errno int) = GetModuleHandleW
//sys RegisterClassEx(wndclass *Wndclassex) (atom uint16, errno int) = user32.RegisterClassExW
//sys CreateWindowEx(exstyle uint32, classname *uint16, windowname *uint16, style uint32, x int32, y int32, width int32, height int32, wndparent uint32, menu uint32, instance uint32, param uintptr) (hwnd uint32, errno int) = user32.CreateWindowExW
//sys DefWindowProc(hwnd uint32, msg uint32, wparam int32, lparam int32) (lresult int32) = user32.DefWindowProcW
//sys DestroyWindow(hwnd uint32) (errno int) = user32.DestroyWindow
//sys PostQuitMessage(exitcode int32) = user32.PostQuitMessage
//sys ShowWindow(hwnd uint32, cmdshow int32) (wasvisible bool) = user32.ShowWindow
//sys UpdateWindow(hwnd uint32) (errno int) = user32.UpdateWindow
//sys GetMessage(msg *Msg, hwnd uint32, MsgFilterMin uint32, MsgFilterMax uint32) (ret int32, errno int) [failretval==-1] = user32.GetMessageW
//sys TranslateMessage(msg *Msg) (done bool) = user32.TranslateMessage
//sys DispatchMessage(msg *Msg) (ret int32) = user32.DispatchMessageW
//sys LoadIcon(instance uint32, iconname *uint16) (icon uint32, errno int) = user32.LoadIconW
//sys LoadCursor(instance uint32, cursorname *uint16) (cursor uint32, errno int) = user32.LoadCursorW
//sys SetCursor(cursor uint32) (precursor uint32, errno int) = user32.SetCursor
//sys SendMessage(hwnd uint32, msg uint32, wparam int32, lparam int32) (lresult int32) = user32.SendMessageW
//sys PostMessage(hwnd uint32, msg uint32, wparam int32, lparam int32) (errno int) = user32.PostMessageW
//sys GetModuleHandle(modname *uint16) (handle syscall.Handle, err error) = GetModuleHandleW
//sys RegisterClassEx(wndclass *Wndclassex) (atom uint16, err error) = user32.RegisterClassExW
//sys CreateWindowEx(exstyle uint32, classname *uint16, windowname *uint16, style uint32, x int32, y int32, width int32, height int32, wndparent syscall.Handle, menu syscall.Handle, instance syscall.Handle, param uintptr) (hwnd syscall.Handle, err error) = user32.CreateWindowExW
//sys DefWindowProc(hwnd syscall.Handle, msg uint32, wparam uintptr, lparam uintptr) (lresult uintptr) = user32.DefWindowProcW
//sys DestroyWindow(hwnd syscall.Handle) (err error) = user32.DestroyWindow
//sys PostQuitMessage(exitcode int32) = user32.PostQuitMessage
//sys ShowWindow(hwnd syscall.Handle, cmdshow int32) (wasvisible bool) = user32.ShowWindow
//sys UpdateWindow(hwnd syscall.Handle) (err error) = user32.UpdateWindow
//sys GetMessage(msg *Msg, hwnd syscall.Handle, MsgFilterMin uint32, MsgFilterMax uint32) (ret int32, err error) [failretval==-1] = user32.GetMessageW
//sys TranslateMessage(msg *Msg) (done bool) = user32.TranslateMessage
//sys DispatchMessage(msg *Msg) (ret int32) = user32.DispatchMessageW
//sys LoadIcon(instance syscall.Handle, iconname *uint16) (icon syscall.Handle, err error) = user32.LoadIconW
//sys LoadCursor(instance syscall.Handle, cursorname *uint16) (cursor syscall.Handle, err error) = user32.LoadCursorW
//sys SetCursor(cursor syscall.Handle) (precursor syscall.Handle, err error) = user32.SetCursor
//sys SendMessage(hwnd syscall.Handle, msg uint32, wparam uintptr, lparam uintptr) (lresult uintptr) = user32.SendMessageW
//sys PostMessage(hwnd syscall.Handle, msg uint32, wparam uintptr, lparam uintptr) (err error) = user32.PostMessageW
func MakeIntResource(id uint16) *uint16 {
return (*uint16)(unsafe.Pointer(uintptr(id)))
return (*uint16)(unsafe.Pointer(uintptr(id)))
}

87
wingui/wingdi.go
View file

@ -9,11 +9,26 @@ const (
WM_PAINT = 15
BI_RGB = 0
BI_BITFIELDS = 3
DIB_PAL_COLORS = 1
DIB_RGB_COLORS = 0
BLACKNESS = 0x42
DSTINVERT = 0x550009
MERGECOPY = 0xC000CA
MERGEPAINT = 0xBB0226
NOTSRCCOPY = 0x330008
NOTSRCERASE = 0x1100A6
PATCOPY = 0xF00021
PATINVERT = 0x5A0049
PATPAINT = 0xFB0A09
SRCAND = 0x8800C6
SRCCOPY = 0xCC0020
SRCERASE = 0x440328
SRCINVERT = 0x660046
SRCPAINT = 0xEE0086
WHITENESS = 0xFF0062
)
type RECT struct {
@ -24,7 +39,7 @@ type RECT struct {
}
type PAINTSTRUCT struct {
HDC uint32
HDC syscall.Handle
Erase int32 // bool
RcPaint RECT
Restore int32 // bool
@ -69,64 +84,64 @@ type RGBQUAD struct {
}
var (
modgdi32 = loadDll("gdi32.dll")
modgdi32 = syscall.NewLazyDLL("gdi32.dll")
procGetDC = getSysProcAddr(moduser32, "GetDC")
procCreateCompatibleDC = getSysProcAddr(modgdi32, "CreateCompatibleDC")
procGetObject = getSysProcAddr(modgdi32, "GetObjectW")
procSelectObject = getSysProcAddr(modgdi32, "SelectObject")
procBeginPaint = getSysProcAddr(moduser32, "BeginPaint")
procEndPaint = getSysProcAddr(moduser32, "EndPaint")
procCreateCompatibleBitmap = getSysProcAddr(modgdi32, "CreateCompatibleBitmap")
procCreateDIBSection = getSysProcAddr(modgdi32, "CreateDIBSection")
procBitBlt = getSysProcAddr(modgdi32, "BitBlt")
procGetDC = moduser32.NewProc("GetDC")
procCreateCompatibleDC = modgdi32.NewProc("CreateCompatibleDC")
procGetObject = modgdi32.NewProc("GetObjectW")
procSelectObject = modgdi32.NewProc("SelectObject")
procBeginPaint = moduser32.NewProc("BeginPaint")
procEndPaint = moduser32.NewProc("EndPaint")
procCreateCompatibleBitmap = modgdi32.NewProc("CreateCompatibleBitmap")
procCreateDIBSection = modgdi32.NewProc("CreateDIBSection")
procBitBlt = modgdi32.NewProc("BitBlt")
)
func GetDC(hwnd uint32) (hdc uint32) {
r0, _, _ := syscall.Syscall(procGetDC, 1, uintptr(hwnd), 0, 0)
hdc = uint32(r0)
func GetDC(hwnd syscall.Handle) (hdc syscall.Handle) {
r0, _, _ := syscall.Syscall(procGetDC.Addr(), 1, uintptr(hwnd), 0, 0)
hdc = syscall.Handle(r0)
return hdc
}
func CreateCompatibleDC(hwnd uint32) (hdc uint32) {
r0, _, _ := syscall.Syscall(procCreateCompatibleDC, 1, uintptr(hwnd), 0, 0)
hdc = uint32(r0)
func CreateCompatibleDC(hwnd syscall.Handle) (hdc syscall.Handle) {
r0, _, _ := syscall.Syscall(procCreateCompatibleDC.Addr(), 1, uintptr(hwnd), 0, 0)
hdc = syscall.Handle(r0)
return hdc
}
func GetObject(hgdiobj uint32, cbBuffer int, object uintptr) (size uint32) {
r0, _, _ := syscall.Syscall(procGetObject, 3, uintptr(hgdiobj), uintptr(cbBuffer), object)
func GetObject(hgdiobj syscall.Handle, cbBuffer uintptr, object uintptr) (size uint32) {
r0, _, _ := syscall.Syscall(procGetObject.Addr(), 3, uintptr(hgdiobj), uintptr(cbBuffer), object)
size = uint32(r0)
return size
}
func SelectObject(hdc uint32, hgdiobj uint32) uint32 {
r0, _, _ := syscall.Syscall(procSelectObject, 2, uintptr(hdc), uintptr(hgdiobj), 0)
return uint32(r0)
func SelectObject(hdc syscall.Handle, hgdiobj syscall.Handle) syscall.Handle {
r0, _, _ := syscall.Syscall(procSelectObject.Addr(), 2, uintptr(hdc), uintptr(hgdiobj), 0)
return syscall.Handle(r0)
}
func BeginPaint(hwnd uint32, ps *PAINTSTRUCT) (hdc uint32) {
r0, _, _ := syscall.Syscall(procBeginPaint, 2, uintptr(hwnd), uintptr(unsafe.Pointer(ps)), 0)
hdc = uint32(r0)
return hdc
func BeginPaint(hwnd syscall.Handle, ps *PAINTSTRUCT) (hdc syscall.Handle){
r0, _, _ := syscall.Syscall(procBeginPaint.Addr(), 2, uintptr(hwnd), uintptr(unsafe.Pointer(ps)), 0)
hdc = syscall.Handle(r0)
return
}
func EndPaint(hwnd uint32, ps *PAINTSTRUCT) bool {
syscall.Syscall(procEndPaint, 2, uintptr(hwnd), uintptr(unsafe.Pointer(ps)), 0)
func EndPaint(hwnd syscall.Handle, ps *PAINTSTRUCT) bool {
syscall.Syscall(procEndPaint.Addr(), 2, uintptr(hwnd), uintptr(unsafe.Pointer(ps)), 0)
return true
}
func CreateCompatibleBitmap(hdc uint32, width, height int) (hbitmap uint32) {
r0, _, _ := syscall.Syscall(procCreateCompatibleBitmap, 3, uintptr(hdc), uintptr(width), uintptr(height))
return uint32(r0)
func CreateCompatibleBitmap(hdc syscall.Handle, width, height uintptr) (hbitmap syscall.Handle) {
r0, _, _ := syscall.Syscall(procCreateCompatibleBitmap.Addr(), 3, uintptr(hdc), uintptr(width), uintptr(height))
return syscall.Handle(r0)
}
func CreateDIBSection(hdc uint32, pbmi *BITMAPINFO, iUsage uint, ppvBits uintptr, hSection uint32, dwOffset uint32) (hbitmap uint32) {
r0, _, _ := syscall.Syscall6(procCreateDIBSection, 6, uintptr(hdc), uintptr(unsafe.Pointer(pbmi)), uintptr(iUsage), ppvBits, uintptr(hSection), uintptr(dwOffset))
return uint32(r0)
func CreateDIBSection(hdc syscall.Handle, pbmi *BITMAPINFO, iUsage uint, ppvBits uintptr, hSection uint32, dwOffset uint32) (hbitmap syscall.Handle) {
r0, _, _ := syscall.Syscall6(procCreateDIBSection.Addr(), 6, uintptr(hdc), uintptr(unsafe.Pointer(pbmi)), uintptr(iUsage), ppvBits, uintptr(hSection), uintptr(dwOffset))
return syscall.Handle(r0)
}
func BitBlt(hdc uint32, nXDest, nYDest, nWidth, nHeight int, hdcSrc uint32, nXSrc, nYSrc int, dwRop uint32) bool {
r0, _, _ := syscall.Syscall9(procBitBlt, 9, uintptr(hdc), uintptr(nXDest), uintptr(nYDest), uintptr(nWidth), uintptr(nHeight), uintptr(hdcSrc), uintptr(nXSrc), uintptr(nYSrc), uintptr(dwRop))
func BitBlt(hdc syscall.Handle, nXDest, nYDest, nWidth, nHeight int, hdcSrc syscall.Handle, nXSrc, nYSrc int, dwRop uint32) bool {
r0, _, _ := syscall.Syscall9(procBitBlt.Addr(), 9, uintptr(hdc), uintptr(nXDest), uintptr(nYDest), uintptr(nWidth), uintptr(nHeight), uintptr(hdcSrc), uintptr(nXSrc), uintptr(nYSrc), uintptr(dwRop))
return r0 != 0
}

151
wingui/wintest/wintest.go Normal file
View file

@ -0,0 +1,151 @@
package main
import (
"fmt"
"os"
"syscall"
"unsafe"
. "code.google.com/p/draw2d/wingui"
)
// some help functions
func abortf(format string, a ...interface{}) {
fmt.Fprintf(os.Stdout, format, a...)
os.Exit(1)
}
func abortErrNo(funcname string, err error) {
errno, _ := err.(syscall.Errno)
abortf("%s failed: %d %s\n", funcname, uint32(errno), err)
}
// global vars
var (
mh syscall.Handle
bh syscall.Handle
)
// WinProc called by windows to notify us of all windows events we might be interested in.
func WndProc(hwnd syscall.Handle, msg uint32, wparam, lparam uintptr) (rc uintptr) {
_ = make([]int, 100000)
switch msg {
case WM_CREATE:
var e error
// CreateWindowEx
bh, e = CreateWindowEx(
0,
syscall.StringToUTF16Ptr("button"),
syscall.StringToUTF16Ptr("Quit"),
WS_CHILD|WS_VISIBLE|BS_DEFPUSHBUTTON,
75, 70, 140, 25,
hwnd, 1, mh, 0)
if e != nil {
abortErrNo("CreateWindowEx", e)
}
fmt.Printf("button handle is %x\n", bh)
rc = DefWindowProc(hwnd, msg, wparam, lparam)
case WM_COMMAND:
switch syscall.Handle(lparam) {
case bh:
e := PostMessage(hwnd, WM_CLOSE, 0, 0)
if e != nil {
abortErrNo("PostMessage", e)
}
default:
rc = DefWindowProc(hwnd, msg, wparam, lparam)
}
case WM_CLOSE:
DestroyWindow(hwnd)
case WM_DESTROY:
PostQuitMessage(0)
default:
rc = DefWindowProc(hwnd, msg, wparam, lparam)
}
//fmt.Printf("WndProc(0x%08x, %d, 0x%08x, 0x%08x) (%d)\n", hwnd, msg, wparam, lparam, rc)
return
}
func rungui() int {
var e error
// GetModuleHandle
mh, e = GetModuleHandle(nil)
if e != nil {
abortErrNo("GetModuleHandle", e)
}
// Get icon we're going to use.
myicon, e := LoadIcon(0, IDI_APPLICATION)
if e != nil {
abortErrNo("LoadIcon", e)
}
// Get cursor we're going to use.
mycursor, e := LoadCursor(0, IDC_ARROW)
if e != nil {
abortErrNo("LoadCursor", e)
}
// Create callback
wproc := syscall.NewCallback(WndProc)
// RegisterClassEx
wcname := syscall.StringToUTF16Ptr("myWindowClass")
var wc Wndclassex
wc.Size = uint32(unsafe.Sizeof(wc))
wc.WndProc = wproc
wc.Instance = mh
wc.Icon = myicon
wc.Cursor = mycursor
wc.Background = COLOR_BTNFACE + 1
wc.MenuName = nil
wc.ClassName = wcname
wc.IconSm = myicon
if _, e := RegisterClassEx(&wc); e != nil {
abortErrNo("RegisterClassEx", e)
}
// CreateWindowEx
wh, e := CreateWindowEx(
WS_EX_CLIENTEDGE,
wcname,
syscall.StringToUTF16Ptr("My window"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, 300, 200,
0, 0, mh, 0)
if e != nil {
abortErrNo("CreateWindowEx", e)
}
fmt.Printf("main window handle is %x\n", wh)
// ShowWindow
ShowWindow(wh, SW_SHOWDEFAULT)
// UpdateWindow
if e := UpdateWindow(wh); e != nil {
abortErrNo("UpdateWindow", e)
}
// Process all windows messages until WM_QUIT.
var m Msg
for {
r, e := GetMessage(&m, 0, 0, 0)
if e != nil {
abortErrNo("GetMessage", e)
}
if r == 0 {
// WM_QUIT received -> get out
break
}
TranslateMessage(&m)
DispatchMessage(&m)
}
return int(m.Wparam)
}
func main() {
rc := rungui()
os.Exit(rc)
}

104
cmd/testWalkDraw.go → wingui/wintestgdi/wintestgdi.go
View file

@ -6,14 +6,14 @@ package main
import (
"code.google.com/p/draw2d/draw2d"
"code.google.com/p/draw2d/postscript"
"code.google.com/p/draw2d/wingui"
"code.google.com/p/draw2d/postscript"
"fmt"
"image"
"image/color"
"io/ioutil"
"os"
"image/color"
"strings"
"os"
"syscall"
"time"
"unsafe"
@ -26,8 +26,8 @@ func abortf(format string, a ...interface{}) {
os.Exit(1)
}
func abortErrNo(funcname string, err int) {
abortf("%s failed: %d %s\n", funcname, err, syscall.Errstr(err))
func abortErrNo(funcname string, err error) {
abortf("%s failed: %d %s\n", funcname, err, err)
}
// global vars
@ -39,13 +39,13 @@ func TestDrawCubicCurve(gc draw2d.GraphicContext) {
x2, y2 := 153.6, 25.6
x3, y3 := 230.4, 128.0
gc.SetFillColor(color.NRGBA{0xAA, 0xAA, 0xAA, 0xFF})
gc.SetStrokeColor(color.NRGBA{0, 0, 0, 0xFF})
gc.SetLineWidth(10)
gc.MoveTo(x, y)
gc.CubicCurveTo(x1, y1, x2, y2, x3, y3)
gc.Stroke()
gc.SetStrokeColor(color.NRGBA{0xFF, 0x33, 0x33, 0x88})
gc.SetStrokeColor(color.NRGBA{0xFF, 0, 0, 0xFF})
gc.SetLineWidth(6)
// draw segment of curve
@ -56,20 +56,35 @@ func TestDrawCubicCurve(gc draw2d.GraphicContext) {
gc.Stroke()
}
func DrawTiger(gc draw2d.GraphicContext){
if postscriptContent == "" {
src, err := os.OpenFile("../../resource/postscript/tiger.ps", 0, 0)
if err != nil {
fmt.Println("can't find postscript file.")
return
}
defer src.Close()
bytes, err := ioutil.ReadAll(src)
postscriptContent = string(bytes)
}
interpreter := postscript.NewInterpreter(gc)
reader := strings.NewReader(postscriptContent)
interpreter.Execute(reader)
}
var (
mh uint32
wndBufferHeader uint32
mh syscall.Handle
hdcWndBuffer syscall.Handle
wndBufferHeader syscall.Handle
wndBuffer wingui.BITMAP
hdcWndBuffer uint32
ppvBits *color.RGBA
backBuffer *image.RGBA
ppvBits *uint8
backBuffer *image.RGBA
postscriptContent string
)
// WinProc called by windows to notify us of all windows events we might be interested in.
func WndProc(hwnd, msg uint32, wparam, lparam int32) uintptr {
var rc int32
func WndProc(hwnd syscall.Handle, msg uint32, wparam, lparam uintptr) (rc uintptr) {
_ = make([]int, 100000)
switch msg {
case wingui.WM_CREATE:
hdc := wingui.GetDC(hwnd)
@ -102,35 +117,41 @@ func WndProc(hwnd, msg uint32, wparam, lparam int32) uintptr {
hdcWndBuffer = wingui.CreateCompatibleDC(hdc)
wingui.SelectObject(hdcWndBuffer, wndBufferHeader)
pixel := (*[600 * 800]color.RGBA)(unsafe.Pointer(ppvBits))
pixel := (*[600 * 800 * 4]uint8)(unsafe.Pointer(ppvBits))
pixelSlice := pixel[:]
backBuffer = &image.RGBA{pixelSlice, 600, image.Rect(0, 0, 600, 800)}
backBuffer = &image.RGBA{pixelSlice, 4*600, image.Rect(0, 0, 600, 800)}
fmt.Println("Create windows")
rc = wingui.DefWindowProc(hwnd, msg, wparam, lparam)
case wingui.WM_COMMAND:
switch uint32(lparam) {
switch syscall.Handle(lparam) {
default:
rc = wingui.DefWindowProc(hwnd, msg, wparam, lparam)
}
case wingui.WM_PAINT:
var ps wingui.PAINTSTRUCT
lastTime := time.Now()
hdc := wingui.BeginPaint(hwnd, &ps)
t := time.Now()
gc := draw2d.NewGraphicContext(backBuffer)
gc.SetFillColor(color.RGBA{0xFF, 0xFF, 0xFF, 0xFF})
// gc.Clear()
/*gc.SetFillColor(color.RGBA{0xFF, 0xFF, 0xFF, 0xFF})
gc.Clear()*/
for i := 0; i < len(backBuffer.Pix); i+=1 {
backBuffer.Pix[i] = 0xff
}
gc.Save()
//gc.Translate(0, -380)
interpreter := postscript.NewInterpreter(gc)
reader := strings.NewReader(postscriptContent)
interpreter.Execute(reader)
dt := time.Now().Sub(lastTime)
DrawTiger(gc)
gc.Restore()
// back buf in
var tmp uint8
for i := 0; i < len(backBuffer.Pix); i+=4 {
tmp = backBuffer.Pix[i]
backBuffer.Pix[i] = backBuffer.Pix[i+2]
backBuffer.Pix[i+2] = tmp
}
wingui.BitBlt(hdc, 0, 0, int(wndBuffer.Width), int(wndBuffer.Height), hdcWndBuffer, 0, 0, wingui.SRCCOPY)
wingui.EndPaint(hwnd, &ps)
rc = wingui.DefWindowProc(hwnd, msg, wparam, lparam)
dt := time.Now().Sub(t)
fmt.Printf("Redraw in : %f ms\n", float64(dt)*1e-6)
case wingui.WM_CLOSE:
wingui.DestroyWindow(hwnd)
@ -139,27 +160,27 @@ func WndProc(hwnd, msg uint32, wparam, lparam int32) uintptr {
default:
rc = wingui.DefWindowProc(hwnd, msg, wparam, lparam)
}
return uintptr(rc)
return
}
func rungui() int {
var e int
var e error
// GetModuleHandle
mh, e = wingui.GetModuleHandle(nil)
if e != 0 {
if e != nil {
abortErrNo("GetModuleHandle", e)
}
// Get icon we're going to use.
myicon, e := wingui.LoadIcon(0, wingui.IDI_APPLICATION)
if e != 0 {
if e != nil {
abortErrNo("LoadIcon", e)
}
// Get cursor we're going to use.
mycursor, e := wingui.LoadCursor(0, wingui.IDC_ARROW)
if e != 0 {
if e != nil {
abortErrNo("LoadCursor", e)
}
@ -167,19 +188,18 @@ func rungui() int {
wproc := syscall.NewCallback(WndProc)
// RegisterClassEx
wcname := syscall.StringToUTF16Ptr("Test Draw2d")
wcname := syscall.StringToUTF16Ptr("myWindowClass")
var wc wingui.Wndclassex
wc.Size = uint32(unsafe.Sizeof(wc))
wc.WndProc = wproc
//wc.Style = wingui.CS_HREDRAW | wingui.CS_VREDRAW
wc.Instance = mh
wc.Icon = myicon
wc.Cursor = mycursor
wc.Background = 0
wc.Background = wingui.COLOR_BTNFACE + 1
wc.MenuName = nil
wc.ClassName = wcname
wc.IconSm = myicon
if _, e := wingui.RegisterClassEx(&wc); e != 0 {
if _, e := wingui.RegisterClassEx(&wc); e != nil {
abortErrNo("RegisterClassEx", e)
}
@ -191,7 +211,7 @@ func rungui() int {
wingui.WS_OVERLAPPEDWINDOW,
wingui.CW_USEDEFAULT, wingui.CW_USEDEFAULT, 600, 800,
0, 0, mh, 0)
if e != 0 {
if e != nil {
abortErrNo("CreateWindowEx", e)
}
fmt.Printf("main window handle is %x\n", wh)
@ -200,7 +220,7 @@ func rungui() int {
wingui.ShowWindow(wh, wingui.SW_SHOWDEFAULT)
// UpdateWindow
if e := wingui.UpdateWindow(wh); e != 0 {
if e := wingui.UpdateWindow(wh); e != nil {
abortErrNo("UpdateWindow", e)
}
@ -208,7 +228,7 @@ func rungui() int {
var m wingui.Msg
for {
r, e := wingui.GetMessage(&m, 0, 0, 0)
if e != 0 {
if e != nil {
abortErrNo("GetMessage", e)
}
if r == 0 {
@ -222,14 +242,6 @@ func rungui() int {
}
func main() {
src, err := os.OpenFile("../resource/postscript/tiger.ps", 0, 0)
if err != nil {
fmt.Println("can't find postscript file.")
return
}
defer src.Close()
bytes, err := ioutil.ReadAll(src)
postscriptContent = string(bytes)
rc := rungui()
os.Exit(rc)
}

314
wingui/zwinapi.go
View file

@ -1,208 +1,192 @@
// +build windows
// mksyscall_windows.pl winapi.go
// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
package wingui
import "unsafe"
import "syscall"
var (
modkernel32 = loadDll("kernel32.dll")
moduser32 = loadDll("user32.dll")
modkernel32 = syscall.NewLazyDLL("kernel32.dll")
moduser32 = syscall.NewLazyDLL("user32.dll")
procGetModuleHandleW = getSysProcAddr(modkernel32, "GetModuleHandleW")
procRegisterClassExW = getSysProcAddr(moduser32, "RegisterClassExW")
procCreateWindowExW = getSysProcAddr(moduser32, "CreateWindowExW")
procDefWindowProcW = getSysProcAddr(moduser32, "DefWindowProcW")
procDestroyWindow = getSysProcAddr(moduser32, "DestroyWindow")
procPostQuitMessage = getSysProcAddr(moduser32, "PostQuitMessage")
procShowWindow = getSysProcAddr(moduser32, "ShowWindow")
procUpdateWindow = getSysProcAddr(moduser32, "UpdateWindow")
procGetMessageW = getSysProcAddr(moduser32, "GetMessageW")
procTranslateMessage = getSysProcAddr(moduser32, "TranslateMessage")
procDispatchMessageW = getSysProcAddr(moduser32, "DispatchMessageW")
procLoadIconW = getSysProcAddr(moduser32, "LoadIconW")
procLoadCursorW = getSysProcAddr(moduser32, "LoadCursorW")
procSetCursor = getSysProcAddr(moduser32, "SetCursor")
procSendMessageW = getSysProcAddr(moduser32, "SendMessageW")
procPostMessageW = getSysProcAddr(moduser32, "PostMessageW")
procGetModuleHandleW = modkernel32.NewProc("GetModuleHandleW")
procRegisterClassExW = moduser32.NewProc("RegisterClassExW")
procCreateWindowExW = moduser32.NewProc("CreateWindowExW")
procDefWindowProcW = moduser32.NewProc("DefWindowProcW")
procDestroyWindow = moduser32.NewProc("DestroyWindow")
procPostQuitMessage = moduser32.NewProc("PostQuitMessage")
procShowWindow = moduser32.NewProc("ShowWindow")
procUpdateWindow = moduser32.NewProc("UpdateWindow")
procGetMessageW = moduser32.NewProc("GetMessageW")
procTranslateMessage = moduser32.NewProc("TranslateMessage")
procDispatchMessageW = moduser32.NewProc("DispatchMessageW")
procLoadIconW = moduser32.NewProc("LoadIconW")
procLoadCursorW = moduser32.NewProc("LoadCursorW")
procSetCursor = moduser32.NewProc("SetCursor")
procSendMessageW = moduser32.NewProc("SendMessageW")
procPostMessageW = moduser32.NewProc("PostMessageW")
)
func GetModuleHandle(modname *uint16) (handle uint32, errno int) {
r0, _, e1 := syscall.Syscall(procGetModuleHandleW, 1, uintptr(unsafe.Pointer(modname)), 0, 0)
handle = uint32(r0)
if handle == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = syscall.EINVAL
}
} else {
errno = 0
}
return
func GetModuleHandle(modname *uint16) (handle syscall.Handle, err error) {
r0, _, e1 := syscall.Syscall(procGetModuleHandleW.Addr(), 1, uintptr(unsafe.Pointer(modname)), 0, 0)
handle = syscall.Handle(r0)
if handle == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func RegisterClassEx(wndclass *Wndclassex) (atom uint16, errno int) {
r0, _, e1 := syscall.Syscall(procRegisterClassExW, 1, uintptr(unsafe.Pointer(wndclass)), 0, 0)
atom = uint16(r0)
if atom == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = syscall.EINVAL
}
} else {
errno = 0
}
return
func RegisterClassEx(wndclass *Wndclassex) (atom uint16, err error) {
r0, _, e1 := syscall.Syscall(procRegisterClassExW.Addr(), 1, uintptr(unsafe.Pointer(wndclass)), 0, 0)
atom = uint16(r0)
if atom == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func CreateWindowEx(exstyle uint32, classname *uint16, windowname *uint16, style uint32, x int32, y int32, width int32, height int32, wndparent uint32, menu uint32, instance uint32, param uintptr) (hwnd uint32, errno int) {
r0, _, e1 := syscall.Syscall12(procCreateWindowExW, 12, uintptr(exstyle), uintptr(unsafe.Pointer(classname)), uintptr(unsafe.Pointer(windowname)), uintptr(style), uintptr(x), uintptr(y), uintptr(width), uintptr(height), uintptr(wndparent), uintptr(menu), uintptr(instance), uintptr(param))
hwnd = uint32(r0)
if hwnd == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = syscall.EINVAL
}
} else {
errno = 0
}
return
func CreateWindowEx(exstyle uint32, classname *uint16, windowname *uint16, style uint32, x int32, y int32, width int32, height int32, wndparent syscall.Handle, menu syscall.Handle, instance syscall.Handle, param uintptr) (hwnd syscall.Handle, err error) {
r0, _, e1 := syscall.Syscall12(procCreateWindowExW.Addr(), 12, uintptr(exstyle), uintptr(unsafe.Pointer(classname)), uintptr(unsafe.Pointer(windowname)), uintptr(style), uintptr(x), uintptr(y), uintptr(width), uintptr(height), uintptr(wndparent), uintptr(menu), uintptr(instance), uintptr(param))
hwnd = syscall.Handle(r0)
if hwnd == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func DefWindowProc(hwnd uint32, msg uint32, wparam int32, lparam int32) (lresult int32) {
r0, _, _ := syscall.Syscall6(procDefWindowProcW, 4, uintptr(hwnd), uintptr(msg), uintptr(wparam), uintptr(lparam), 0, 0)
lresult = int32(r0)
return
func DefWindowProc(hwnd syscall.Handle, msg uint32, wparam uintptr, lparam uintptr) (lresult uintptr) {
r0, _, _ := syscall.Syscall6(procDefWindowProcW.Addr(), 4, uintptr(hwnd), uintptr(msg), uintptr(wparam), uintptr(lparam), 0, 0)
lresult = uintptr(r0)
return
}
func DestroyWindow(hwnd uint32) (errno int) {
r1, _, e1 := syscall.Syscall(procDestroyWindow, 1, uintptr(hwnd), 0, 0)
if int(r1) == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = syscall.EINVAL
}
} else {
errno = 0
}
return
func DestroyWindow(hwnd syscall.Handle) (err error) {
r1, _, e1 := syscall.Syscall(procDestroyWindow.Addr(), 1, uintptr(hwnd), 0, 0)
if int(r1) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func PostQuitMessage(exitcode int32) {
syscall.Syscall(procPostQuitMessage, 1, uintptr(exitcode), 0, 0)
return
syscall.Syscall(procPostQuitMessage.Addr(), 1, uintptr(exitcode), 0, 0)
return
}
func ShowWindow(hwnd uint32, cmdshow int32) (wasvisible bool) {
r0, _, _ := syscall.Syscall(procShowWindow, 2, uintptr(hwnd), uintptr(cmdshow), 0)
wasvisible = bool(r0 != 0)
return
func ShowWindow(hwnd syscall.Handle, cmdshow int32) (wasvisible bool) {
r0, _, _ := syscall.Syscall(procShowWindow.Addr(), 2, uintptr(hwnd), uintptr(cmdshow), 0)
wasvisible = bool(r0 != 0)
return
}
func UpdateWindow(hwnd uint32) (errno int) {
r1, _, e1 := syscall.Syscall(procUpdateWindow, 1, uintptr(hwnd), 0, 0)
if int(r1) == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = syscall.EINVAL
}
} else {
errno = 0
}
return
func UpdateWindow(hwnd syscall.Handle) (err error) {
r1, _, e1 := syscall.Syscall(procUpdateWindow.Addr(), 1, uintptr(hwnd), 0, 0)
if int(r1) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func GetMessage(msg *Msg, hwnd uint32, MsgFilterMin uint32, MsgFilterMax uint32) (ret int32, errno int) {
r0, _, e1 := syscall.Syscall6(procGetMessageW, 4, uintptr(unsafe.Pointer(msg)), uintptr(hwnd), uintptr(MsgFilterMin), uintptr(MsgFilterMax), 0, 0)
ret = int32(r0)
if ret == -1 {
if e1 != 0 {
errno = int(e1)
} else {
errno = syscall.EINVAL
}
} else {
errno = 0
}
return
func GetMessage(msg *Msg, hwnd syscall.Handle, MsgFilterMin uint32, MsgFilterMax uint32) (ret int32, err error) {
r0, _, e1 := syscall.Syscall6(procGetMessageW.Addr(), 4, uintptr(unsafe.Pointer(msg)), uintptr(hwnd), uintptr(MsgFilterMin), uintptr(MsgFilterMax), 0, 0)
ret = int32(r0)
if ret == -1 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func TranslateMessage(msg *Msg) (done bool) {
r0, _, _ := syscall.Syscall(procTranslateMessage, 1, uintptr(unsafe.Pointer(msg)), 0, 0)
done = bool(r0 != 0)
return
r0, _, _ := syscall.Syscall(procTranslateMessage.Addr(), 1, uintptr(unsafe.Pointer(msg)), 0, 0)
done = bool(r0 != 0)
return
}
func DispatchMessage(msg *Msg) (ret int32) {
r0, _, _ := syscall.Syscall(procDispatchMessageW, 1, uintptr(unsafe.Pointer(msg)), 0, 0)
ret = int32(r0)
return
r0, _, _ := syscall.Syscall(procDispatchMessageW.Addr(), 1, uintptr(unsafe.Pointer(msg)), 0, 0)
ret = int32(r0)
return
}
func LoadIcon(instance uint32, iconname *uint16) (icon uint32, errno int) {
r0, _, e1 := syscall.Syscall(procLoadIconW, 2, uintptr(instance), uintptr(unsafe.Pointer(iconname)), 0)
icon = uint32(r0)
if icon == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = syscall.EINVAL
}
} else {
errno = 0
}
return
func LoadIcon(instance syscall.Handle, iconname *uint16) (icon syscall.Handle, err error) {
r0, _, e1 := syscall.Syscall(procLoadIconW.Addr(), 2, uintptr(instance), uintptr(unsafe.Pointer(iconname)), 0)
icon = syscall.Handle(r0)
if icon == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func LoadCursor(instance uint32, cursorname *uint16) (cursor uint32, errno int) {
r0, _, e1 := syscall.Syscall(procLoadCursorW, 2, uintptr(instance), uintptr(unsafe.Pointer(cursorname)), 0)
cursor = uint32(r0)
if cursor == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = syscall.EINVAL
}
} else {
errno = 0
}
return
func LoadCursor(instance syscall.Handle, cursorname *uint16) (cursor syscall.Handle, err error) {
r0, _, e1 := syscall.Syscall(procLoadCursorW.Addr(), 2, uintptr(instance), uintptr(unsafe.Pointer(cursorname)), 0)
cursor = syscall.Handle(r0)
if cursor == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func SetCursor(cursor uint32) (precursor uint32, errno int) {
r0, _, e1 := syscall.Syscall(procSetCursor, 1, uintptr(cursor), 0, 0)
precursor = uint32(r0)
if precursor == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = syscall.EINVAL
}
} else {
errno = 0
}
return
func SetCursor(cursor syscall.Handle) (precursor syscall.Handle, err error) {
r0, _, e1 := syscall.Syscall(procSetCursor.Addr(), 1, uintptr(cursor), 0, 0)
precursor = syscall.Handle(r0)
if precursor == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func SendMessage(hwnd uint32, msg uint32, wparam int32, lparam int32) (lresult int32) {
r0, _, _ := syscall.Syscall6(procSendMessageW, 4, uintptr(hwnd), uintptr(msg), uintptr(wparam), uintptr(lparam), 0, 0)
lresult = int32(r0)
return
func SendMessage(hwnd syscall.Handle, msg uint32, wparam uintptr, lparam uintptr) (lresult uintptr) {
r0, _, _ := syscall.Syscall6(procSendMessageW.Addr(), 4, uintptr(hwnd), uintptr(msg), uintptr(wparam), uintptr(lparam), 0, 0)
lresult = uintptr(r0)
return
}
func PostMessage(hwnd uint32, msg uint32, wparam int32, lparam int32) (errno int) {
r1, _, e1 := syscall.Syscall6(procPostMessageW, 4, uintptr(hwnd), uintptr(msg), uintptr(wparam), uintptr(lparam), 0, 0)
if int(r1) == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = syscall.EINVAL
}
} else {
errno = 0
}
return
func PostMessage(hwnd syscall.Handle, msg uint32, wparam uintptr, lparam uintptr) (err error) {
r1, _, e1 := syscall.Syscall6(procPostMessageW.Addr(), 4, uintptr(hwnd), uintptr(msg), uintptr(wparam), uintptr(lparam), 0, 0)
if int(r1) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}