C# Showing Form with WS_EX_NOACTIVATE flag
- by Maks
I have a borderless form which is always on top and with WS_EX_NOACTIVATE flag set to prevent it for gaining focus.
const int WS_EX_NOACTIVATE = 0x08000000;
protected override CreateParams CreateParams {
get {
CreateParams param = base.CreateParams;
param.ExStyle |= WS_EX_NOACTIVATE;
return param;
}
}
Form contains small picture box for moving (since it's borderless):
private void pictureBox4_MouseMove(object sender, MouseEventArgs e) {
if (e.Button == MouseButtons.Left) {
ReleaseCapture();
SendMessage(this.Handle, 0xa1, 0x2, 0);
}
}
However when I move the window it doesn't get redrawn/shown, only when I release the mouse button it moves form to that location.
I saw some application which are are working in a similar fashion but they are showing the window while moving (like some virtual keyboards I saw) and also many questions on net about this issue but no answer.
Can someone please tell me is it possible to show window/form like this while moving (like "normal" window) and if yes, how to do it?
Thanks.
