func (this *ControlBase) Invalidate(erase bool) {
pRect := w32.GetClientRect(this.hwnd)
if this.isForm {
w32.InvalidateRect(this.hwnd, pRect, erase)
} else {
rc := ScreenToClientRect(this.hwnd, pRect)
w32.InvalidateRect(this.hwnd, rc.GetW32Rect(), erase)
}
}
func (app *DemoApp) WndProc(hwnd w32.HWND, msg uint, wParam, lParam uintptr) uintptr {
if hwnd != app.hwnd {
return w32.DefWindowProc(hwnd, msg, wParam, lParam)
}
switch msg {
case w32.WM_SIZE:
width := w32.LOWORD(uint(lParam))
height := w32.HIWORD(uint(lParam))
app.OnResize(width, height)
return 0
case w32.WM_DISPLAYCHANGE:
w32.InvalidateRect(app.hwnd, nil, false)
return 0
case w32.WM_PAINT:
app.OnRender()
w32.ValidateRect(app.hwnd, nil)
return 0
case w32.WM_DESTROY:
w32.PostQuitMessage(0)
return 1
}
return w32.DefWindowProc(hwnd, msg, wParam, lParam)
}
func (this *Window) FlushImage() {
w32.InvalidateRect(this.hwnd, nil, false)
w32.UpdateWindow(this.hwnd)
}
// Update updates the window content.
func (win *window) Update() {
w32.InvalidateRect(win.id, nil, true)
}