示例#1
0
func MustRegisterWindowClassWithWndProcPtr(className string, wndProcPtr uintptr) {
	if registeredWindowClasses[className] {
		panic("window class already registered")
	}

	hInst := win.GetModuleHandle(nil)
	if hInst == 0 {
		panic("GetModuleHandle")
	}

	hIcon := win.LoadIcon(0, (*uint16)(unsafe.Pointer(uintptr(win.IDI_APPLICATION))))
	if hIcon == 0 {
		panic("LoadIcon")
	}

	hCursor := win.LoadCursor(0, (*uint16)(unsafe.Pointer(uintptr(win.IDC_ARROW))))
	if hCursor == 0 {
		panic("LoadCursor")
	}

	var wc win.WNDCLASSEX
	wc.CbSize = uint32(unsafe.Sizeof(wc))
	wc.LpfnWndProc = wndProcPtr
	wc.HInstance = hInst
	wc.HIcon = hIcon
	wc.HCursor = hCursor
	wc.HbrBackground = win.COLOR_BTNFACE + 1
	wc.LpszClassName = syscall.StringToUTF16Ptr(className)

	if atom := win.RegisterClassEx(&wc); atom == 0 {
		panic("RegisterClassEx")
	}

	registeredWindowClasses[className] = true
}
示例#2
0
func MyRegisterClass(hInstance win.HINSTANCE) (atom win.ATOM) {
	var wc win.WNDCLASSEX
	wc.CbSize = uint32(unsafe.Sizeof(wc))
	wc.Style = win.CS_HREDRAW | win.CS_VREDRAW
	wc.LpfnWndProc = syscall.NewCallback(WndProc)
	wc.CbClsExtra = 0
	wc.CbWndExtra = 0
	wc.HInstance = hInstance
	wc.HbrBackground = win.GetSysColorBrush(win.COLOR_WINDOWFRAME)
	wc.LpszMenuName = syscall.StringToUTF16Ptr("")
	wc.LpszClassName = syscall.StringToUTF16Ptr(wndClassName)
	wc.HIconSm = win.LoadIcon(0, win.MAKEINTRESOURCE(win.IDI_APPLICATION))
	wc.HIcon = win.LoadIcon(0, win.MAKEINTRESOURCE(win.IDI_APPLICATION))
	wc.HCursor = win.LoadCursor(0, win.MAKEINTRESOURCE(win.IDC_ARROW))

	return win.RegisterClassEx(&wc)
}