Messages of Child applications

[T i T i]

Hi EveryBody, I used the later code to handle some messages sent to my application and it works, but my question is how to handle messages sent for child applications of my application(parent) [System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")] protected override void WndProc(ref Message m) { // Listen for operating system messages. switch (m.Msg) { case WM_SIZING: MessageBox.Show("Sizing"); return ; case WM_SIZE: MessageBox.Show("Size"); if(m.WParam==(IntPtr)SIZE_MINIMIZED) MessageBox.Show("SIZE_MINIMIZED"); else if(m.WParam==(IntPtr)SIZE_MAXIMIZED) MessageBox.Show("SIZE_MAXIMIZED"); return; case SW_MAXIMIZE: MessageBox.Show("SW_MAXIMIZE"); return; case WM_MOVING: MessageBox.Show("Moving"); return; } base.WndProc(ref m); } Please I need a very fast help. Thank you .

[Dave Kreskowiak]

Child applications? There's no such thing. Are you talking about child Windows or MDIChildren? Each form has it's own message pump. Your parent form will not get the messages meant for child forms. RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

[Heath Stewart]

Dave's right about the message pump. Some controls will send their parents messages, and these are documented in the Platform SDK (almost every control in Windows Forms encapsulates Windows Common Controls). There is another way, though. Implement the IMessageFilter interface and add an instance of your implementation using Application.AddMessageFilter. This installs a message filter for the application's message pump, which will trap messages and allow you to process them (or even remove them) before dispatching them to their destination windows.

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