Disabling the 'X' button in the caption bar

[Dario Solera]

Hi, is there a way to disable the X (close) button in the title bar of a Form? I don't want to completely remove the controls from the title bar because I want to have the icon and the minimize button still visible. I tried a few ways based on the override of the WndProc method, but they didn't work, probably because they were in VB6 and porting them to C# broke something. Thanks for any help.

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[Vipin Venugopal]

I guess thats not possible. Even I wanted the same thing some time ago but failed to do it. i even tried with some java scripts there also i failed to get a result. So i guess it is not possible. Vipin

[Rahul RK]

Hello Friend, As i get your problem. Try this solution. Firstly Declair a bool IsClose = false; Then in, protected override void Dispose( bool disposing ) { if(IsClose) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } } Make IsClose = true when you want to close the form and then call Dispose(true); Rahul Kulkarni

[Dario Solera]

I already use this method, but the close button is still enabled, so when the user clicks on it, nothing happens and it has not a good feeling. Thanks anyway.

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[Lost User]

// constants for menu manipulation
const int SC_CLOSE = 0xF060;
const int MF_BYCOMMAND = 0x0;

[System.Runtime.InteropServices.DllImport("user32.dll")]
public static extern IntPtr RemoveMenu(IntPtr menuHwnd, int position, int flags );

[System.Runtime.InteropServices.DllImport("user32.dll")]
public static extern IntPtr GetSystemMenu(IntPtr hwnd, int bRevert);

public static void EnableApplicationClose( System.Windows.Forms.Form form, bool val )
{
IntPtr menu = GetSystemMenu( form.Handle, val ? 1 : 0 );
if ( !val && menu != IntPtr.Zero )
RemoveMenu( menu, SC_CLOSE, MF_BYCOMMAND );
else
{
// needed when enabling the app close box to force it to redraw.
form.Enabled = false;
form.Enabled = true;
}
}

[Dario Solera]

Thank you so much! It's exactly what I was looking for!

_____________________________________________ Tozzi is right: Gaia is getting rid of us. My Blog [ITA] - Developing ScrewTurn Wiki 1.0 Beta3