Beispiel #1
0
// MustRegisterWindowClass registers the specified window class.
//
// MustRegisterWindowClass must be called once for every window type that is not
// based on any system provided control, before calling InitChildWidget or
// InitWidget. Calling MustRegisterWindowClass twice with the same className
// results in a panic.
func MustRegisterWindowClass(className string) {
	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 = defaultWndProcPtr
	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
}
Beispiel #2
0
func CursorSize() Cursor {
	return stockCursor{win.LoadCursor(0, win.MAKEINTRESOURCE(win.IDC_SIZE))}
}
Beispiel #3
0
func CursorIcon() Cursor {
	return stockCursor{win.LoadCursor(0, win.MAKEINTRESOURCE(win.IDC_ICON))}
}
Beispiel #4
0
func CursorHelp() Cursor {
	return stockCursor{win.LoadCursor(0, win.MAKEINTRESOURCE(win.IDC_HELP))}
}
Beispiel #5
0
func CursorAppStarting() Cursor {
	return stockCursor{win.LoadCursor(0, win.MAKEINTRESOURCE(win.IDC_APPSTARTING))}
}
Beispiel #6
0
func CursorHand() Cursor {
	return stockCursor{win.LoadCursor(0, win.MAKEINTRESOURCE(win.IDC_HAND))}
}
Beispiel #7
0
func CursorNo() Cursor {
	return stockCursor{win.LoadCursor(0, win.MAKEINTRESOURCE(win.IDC_NO))}
}
Beispiel #8
0
func CursorUpArrow() Cursor {
	return stockCursor{win.LoadCursor(0, win.MAKEINTRESOURCE(win.IDC_UPARROW))}
}
Beispiel #9
0
func CursorCross() Cursor {
	return stockCursor{win.LoadCursor(0, win.MAKEINTRESOURCE(win.IDC_CROSS))}
}
Beispiel #10
0
func CursorWait() Cursor {
	return stockCursor{win.LoadCursor(0, win.MAKEINTRESOURCE(win.IDC_WAIT))}
}
Beispiel #11
0
func CursorIBeam() Cursor {
	return stockCursor{win.LoadCursor(0, win.MAKEINTRESOURCE(win.IDC_IBEAM))}
}