draw2d/wingui/zwinapi.go

210 lines
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2011-04-26 09:56:04 +00:00
package wingui
import "unsafe"
import "syscall"
var (
modkernel32 = loadDll("kernel32.dll")
moduser32 = loadDll("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")
)
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 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 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 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 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 PostQuitMessage(exitcode int32) {
syscall.Syscall(procPostQuitMessage, 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 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 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 TranslateMessage(msg *Msg) (done bool) {
r0, _, _ := syscall.Syscall(procTranslateMessage, 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
}
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 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 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 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 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
}