Winform intercept Minimize, maximize, Close event "organize"

1 Const intWm_syscommand =0x112;2 //form Close Message3 Const intSc_close =0xf060;4 //form Minimized Messages5 Const intSc_minimize =0xf020;6 //form Maximization Message7 Const intSc_maximize =0xf030;8 //form Restore Message9 Const intSc_nomal =0xf120;Ten //form Restore Message One Const intSc_restore =61728; A  - //blocking functions for form buttons - protected Override voidWndProc (refMessage m) the { -  - if(M.msg = =wm_syscommand) - { + //If m.wparam.toint32 () = Sc_restore Then - //' intercept restore button + //Exit Sub A //End If at  - if(M.wparam.toint32 () = =sc_nomal) - { - //Block Restore button -  - return; in } - //if (m.wparam.toint32 () = = sc_minimize) to //{ + // //Intercept Minimized button - // //write the operation code here the  * //return; $ //}Panax Notoginseng if(M.wparam.toint32 () = =sc_maximize) - { the //block form Maximize button + //..................... A  the return; + } -  $  $ //form Close Message - if(M.wparam.toint32 () = =sc_close) - { the if(MessageBox.Show ("Are you sure you want to exit? ","", messageboxbuttons.okcancel) = =DialogResult.OK) - {Wuyi System.Environment.Exit (System.Environment.ExitCode); the } - Else Wu { - return; About } $  - } - } - Base. WndProc (refm); A  + } the  -  $}

Vb

1  ConstWm_syscommand as Integer= &H1122     ConstSc_close as Integer= &hf060'form Close Message3     ConstSc_minimize as Integer= &hf020'form Minimized Messages4     ConstSc_maximize as Integer= &hf030'form Maximization Message5     ConstSc_nomal as Integer= &hf120'form Restore Message6     ConstSc_restore as Integer=61728 'form Restore Message7    8     'blocking functions for form buttons9     Protected Overrides SubWndProc (ByRefM asMessage)Ten  One             Ifm.msg = Wm_syscommand Then A                 'If m.wparam.toint32 () = Sc_restore Then -                 '' intercept restore button -                 'Exit Sub the                 'End If -  -                 IfM.wparam.toint32 () = Sc_nomal Then -                     'Block Restore button +  -                     Exit Sub +                 End If A                 IfM.wparam.toint32 () = Sc_minimize Then at                     'Intercept Minimized button -                     'write the operation code here -  -                     Exit Sub -                 End If -                 IfM.wparam.toint32 () = Sc_maximize Then in                     'block form Maximize button -                     '..................... to  +                     Exit Sub -                 End If the                 'intercepts system messages that double-click the title bar and move the form *                 IfM.msg <> &AMP;HA3AndAlsoM.msg <> &h3AndAlsoM.wparam <> &hf012 Then $                     MyBase. WndProc (m)Panax Notoginseng                 End If -  the                 IfM.wparam.toint32 () = Sc_close Then +  A                     Exit Sub the  +                 End If -             End If $             MyBase. WndProc (m) $     -     End Sub

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Minimize, Maximize, close buttons do not display

 This false;   // settings do not appear close button

Winform intercept Minimize, maximize, Close event "organize"