func MustRegisterWindowClass(className string) { hInstance := win.GetModuleHandle(nil) if hInstance == 0 { panic("GetModuleHandle") } hIcon := win.LoadIcon(hInstance, (*uint16)(unsafe.Pointer(uintptr(ICON_MAIN)))) //hIcon, _ := NewIconFromResource(hInstance, ICON_MAIN) 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 = wndProc wc.HInstance = hInstance wc.HIcon = hIcon wc.HCursor = hCursor wc.HbrBackground = win.COLOR_WINDOW + 1 //COLOR_BTNFACE wc.LpszClassName = syscall.StringToUTF16Ptr(className) if atom := win.RegisterClassEx(&wc); atom == 0 { panic("RegisterClassEx") } }
func NewIconFromResource(instance win.HINSTANCE, resId uint16) (ico win.HICON, err error) { if ico = win.LoadIcon(instance, win.MAKEINTRESOURCE(uintptr(resId))); ico == 0 { err = errors.New(fmt.Sprintf("Cannot load icon from resource with id %v", resId)) } return ico, err }
// NewIconFromResource returns a new Icon, using the specified icon resource. func NewIconFromResource(resName string) (ic *Icon, err error) { hInst := win.GetModuleHandle(nil) if hInst == 0 { err = errors.New("GetModuleHandle") return } if hIcon := win.LoadIcon(hInst, syscall.StringToUTF16Ptr(resName)); hIcon == 0 { err = errors.New("LoadIcon") } else { ic = &Icon{hIcon: hIcon} } return }
func IconWinLogo() *Icon { return &Icon{win.LoadIcon(0, win.MAKEINTRESOURCE(win.IDI_WINLOGO)), true} }
func IconShield() *Icon { return &Icon{win.LoadIcon(0, win.MAKEINTRESOURCE(win.IDI_SHIELD)), true} }
func IconInformation() *Icon { return &Icon{win.LoadIcon(0, win.MAKEINTRESOURCE(win.IDI_INFORMATION)), true} }
func IconWarning() *Icon { return &Icon{win.LoadIcon(0, win.MAKEINTRESOURCE(win.IDI_WARNING)), true} }
func IconQuestion() *Icon { return &Icon{win.LoadIcon(0, win.MAKEINTRESOURCE(win.IDI_QUESTION)), true} }
func IconError() *Icon { return &Icon{win.LoadIcon(0, win.MAKEINTRESOURCE(win.IDI_ERROR)), true} }
func IconApplication() *Icon { return &Icon{win.LoadIcon(0, win.MAKEINTRESOURCE(win.IDI_APPLICATION)), true} }