private void usercontrol_MouseMove(object sender, MouseEventArgs e)
{
// Bringe das Control nach vorne wenn die Maus drüber fährt
UserControlSchueler ctrl = sender as UserControlSchueler;
ctrl.BringToFront();
if (aktivesUsercontrol == null || aktivesUsercontrol != sender)
{
return;
}
Point location = aktivesUsercontrol.Location;
location.Offset(e.Location.X - vorherigeUserControlPos.X, e.Location.Y - vorherigeUserControlPos.Y);
// Bewegen des Usercontrols auf das Panel begrenzen, sonst lässt sich das aus der Anwendung schieben
if (location.X < 0)
{
location.X = 0;
}
if (location.Y < 0)
{
location.Y = 0;
}
if (location.X > (panelSchueler.Size.Width - aktivesUsercontrol.Size.Width))
{
location.X = panelSchueler.Size.Width - aktivesUsercontrol.Size.Width;
}
if (location.Y > (panelSchueler.Size.Height - aktivesUsercontrol.Size.Height))
{
location.Y = panelSchueler.Size.Height - aktivesUsercontrol.Size.Height;
}
aktivesUsercontrol.Location = location;
}
private void usercontrol_MouseUp(object sender, MouseEventArgs e)
{
aktivesUsercontrol = null;
Cursor = Cursors.Default;
}
// https://stackoverflow.com/questions/3868941/how-to-allow-user-to-drag-a-dynamically-created-control-at-the-location-of-his-c
private void usercontrol_MouseDown(object sender, MouseEventArgs e)
{
aktivesUsercontrol = sender as UserControlSchueler;
vorherigeUserControlPos = e.Location;
Cursor = Cursors.Hand;
}