You have to overwrite the CreateParamsproperty like this: private const int CS_DROPSHADOW = 0x00020000; protected override CreateParams CreateParams { get { // add the drop shadow flag for automatically drawing // a drop shadow around the form CreateParams cp = base.CreateParams; cp.ClassStyle |= CS_DROPSHADOW; return cp; } }
This is the default property for controls and can be solved by: Going into Design-View for the Form that contains the specified Control Then changing the Control’s Modifiers property to Public or Internal.
You can use the FindName() method of the ControlTemplate class. // Finding the grid that is generated by the ControlTemplate of the Button Grid gridInTemplate = (Grid)myButton1.Template.FindName(“grid”, myButton1);
The ToolBar class defines a Style that makes Buttons look flat. An example of using it is: <Button Style=”{StaticResource {x:Static ToolBar.ButtonStyleKey}}”/> This also works for a ToggleButton when using ToggleButtonStyleKey. WPF lets you completely restyle controls to make them look like whatever you want, which is why it doesn’t have such a specific FlatStyle property … Read more
You have to watch out for code like this, removing controls from their container like this produces an unrecoverable resource leak. Controls.Remove/At(), or the Controls.Clear() method as suggested by other posters, removes the control from the collection and re-hosts it to the “parking window”. An otherwise invisible window where the native window can find a … Read more
The best option is to use a TableLayoutPanel. Put TableLayoutPanel on the form, set the Dock property to Fill, create required rows and columns and put the controls inside the cells. Of course you need to set Dock/Anchor on the controls inside the cells, so they respond to changes to the cell size. In some … Read more
Assuming WinForms, you can try pinvoking: public class MyRTF: RichTextBox { private const int WM_HSCROLL = 0x114; private const int WM_VSCROLL = 0x115; private const int WM_MOUSEWHEEL = 0x20A; protected override void WndProc(ref Message m) { base.WndProc(ref m); if (m.Msg == WM_VSCROLL || m.Msg == WM_HSCROLL || m.Msg == WM_MOUSEWHEEL) { // scrolling… } } … Read more
I think I have a solution. The problem is not that you cannot create a Handle. You can do that by simply accessing the Handle get accessor on the Control. The problem is that WinForms does not create the control because it is not visible. As it turns out, behind the scenes, a System.Windows.Forms.Control has … Read more
Form.ActiveControl may be what you want.
What you have here is a race condition. You’re better off just catching the ObjectDisposed exception and be done with it. In fact, I think in this case it is the only working solution. try { if (mImageListView.InvokeRequired) mImageListView.Invoke(new YourDelegate(thisMethod)); else mImageListView.RefreshInternal(); } catch (ObjectDisposedException ex) { // Do something clever }