How to prevent our form to minimize, by 'show desktop' click and win+D keypress

Better late than never...
 
While working on a calendar "glued to the desktop", I ran into the same problem.
Here is a working solution:


/************ win32 interop stuff ****************/


[DllImport( "user32.dll", SetLastError = true )]
static extern int SetWindowLong( IntPtr hWnd, int nIndex, IntPtr dwNewLong );

[DllImport( "user32.dll", SetLastError = true )]
static extern IntPtr FindWindow( string lpWindowClass, string lpWindowName );

[DllImport( "user32.dll", SetLastError = true )]
static extern IntPtr FindWindowEx( IntPtr parentHandle, IntPtr childAfter, string className, string windowTitle );


const int GWL_HWNDPARENT = -8;


/************* in Form_Load or equivalent ***************/


IntPtr hprog = FindWindowEx(
    FindWindowEx( 
        FindWindow( "Progman", "Program Manager" ),
        IntPtr.Zero, "SHELLDLL_DefView", ""
    ),
    IntPtr.Zero, "SysListView32", "FolderView"
);
 
SetWindowLong( this.Handle, GWL_HWNDPARENT, hprog );



The tricky part was to set the form's owner (SetWindowLong + GWL_HWNDPARENT) instead of the form's parent (SetParent). This fixed the form not being rendered on an aero desktop.

dear
I allready hide minimize buttons, my application don't have border and title bar.
I want to prevent my application from minimize, when user clicks on 'show desktop' icon in quick launch bar or press Win+D.
 

well my friend, it is imposible to create this type of a winform, but what you can do is build an active desktop application

like this:

http://www.codeproject.com/KB/dotnet/DesktopWidget.aspx

active desktop application is not under the rules of the minimize window, its above it.

hope this helps