Beispiel #1
0
// Register a new window class for the current process. A window with the specified
// class name will use the given WndProc callback function.
func registerWindowClass(className string, callback _WindowProc) error {
	classNamePtr, _ := syscall.UTF16PtrFromString(className)
	var winClass w32.WNDCLASSEX
	winClass.Size = uint32(unsafe.Sizeof(winClass))
	winClass.Instance = w32.GetModuleHandle("")
	winClass.ClassName = classNamePtr
	winClass.WndProc = syscall.NewCallback(callback)

	if w32.RegisterClassEx(&winClass) == 0 {
		return syscall.GetLastError()
	}
	return nil
}
Beispiel #2
0
func RegisterClass(className string, wndproc uintptr) error {
	icon := w32.LoadIcon(gAppInstance, w32.MakeIntResource(w32.IDI_APPLICATION))

	var wc w32.WNDCLASSEX
	wc.Size = uint32(unsafe.Sizeof(wc))
	wc.Style = w32.CS_HREDRAW | w32.CS_VREDRAW
	wc.WndProc = wndproc
	wc.Instance = gAppInstance
	wc.Background = w32.COLOR_BTNFACE + 1
	wc.Icon = icon
	wc.ClassName = syscall.StringToUTF16Ptr(className)
	wc.MenuName = nil
	wc.IconSm = icon

	if ret := w32.RegisterClassEx(&wc); ret == 0 {
		return syscall.GetLastError()
	}

	return nil
}
Beispiel #3
0
func RegisterClass(className string, wndproc uintptr) {
	instance := GetAppInstance()
	icon := w32.LoadIcon(instance, w32.MakeIntResource(w32.IDI_APPLICATION))

	var wc w32.WNDCLASSEX
	wc.Size = uint(unsafe.Sizeof(wc))
	wc.Style = w32.CS_HREDRAW | w32.CS_VREDRAW
	wc.WndProc = wndproc
	wc.Instance = instance
	wc.Background = w32.COLOR_BTNFACE + 1
	wc.Icon = icon
	wc.Cursor = w32.LoadCursor(0, w32.MakeIntResource(w32.IDC_ARROW))
	wc.ClassName = syscall.StringToUTF16Ptr(className)
	wc.MenuName = nil
	wc.IconSm = icon

	if ret := w32.RegisterClassEx(&wc); ret == 0 {
		panic(syscall.GetLastError())
	}
}
Beispiel #4
0
func (app *DemoApp) Initialize() {
	app.CreateDeviceIndependentResources()
	hInstance := w32.GetModuleHandle("")
	icon := w32.LoadIcon(0, w32.MakeIntResource(w32.IDI_APPLICATION))
	wndProc := func(hwnd w32.HWND, msg uint, wParam, lParam uintptr) uintptr {
		return app.WndProc(hwnd, msg, wParam, lParam)
	}
	wndClass := w32.WNDCLASSEX{
		Size:       uint(unsafe.Sizeof(w32.WNDCLASSEX{})),
		Style:      w32.CS_HREDRAW | w32.CS_VREDRAW,
		WndProc:    syscall.NewCallback(wndProc),
		ClsExtra:   0,
		WndExtra:   0,
		Instance:   hInstance,
		Icon:       icon,
		Cursor:     w32.LoadCursor(0, w32.MakeIntResource(w32.IDC_ARROW)),
		Background: 0,
		MenuName:   nil,
		ClassName:  syscall.StringToUTF16Ptr("D2DDemoApp"),
		IconSm:     icon,
	}
	w32.RegisterClassEx(&wndClass)

	dpiX, dpiY := app.factory.GetDesktopDpi(app.factory)

	app.hwnd = w32.CreateWindowEx(
		0,
		syscall.StringToUTF16Ptr("D2DDemoApp"),
		syscall.StringToUTF16Ptr("Hello Windows"),
		w32.WS_OVERLAPPEDWINDOW,
		w32.CW_USEDEFAULT,
		w32.CW_USEDEFAULT,
		int(math.Ceil(float64(640*dpiX/96))),
		int(math.Ceil(float64(640*dpiY/96))),
		0,
		0,
		hInstance,
		nil)
	w32.ShowWindow(app.hwnd, w32.SW_SHOW)
	w32.UpdateWindow(app.hwnd)
}