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Controlling the Closing of a Dialog

Started by John S, January 19, 2008, 08:27:43 PM

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John S

I'm having trouble getting this to work.  I want to warn the user before closing the app if changes were made.  I already have the code working when the menu item "Exit" is selected.  I just can't seem to intercept the dialog [X] control.

Here are some snippets:


AxiPileDefines.inc

...
#define O_CancelB           6   // cancel button
...


"Exit" is selected.  I just can't seem to intercept the dialog [X] control.

Here are some snippets:


AxiPile_Init.src

TabDlg::OnClose(),int
{
CloseDialog(0);

return true;
}



OnControl()

TabDlg :: OnControl(int nID, int nNotifyCode, unsigned int hControl),int
{
select nID
{
case O_CancelB:
if(nNotifyCode = 0)
{
if(EdittedFlag != 0)
{
answer = MessageBox(null, "Discard Work?", "Warning! work not saved", MB_YESNO);
if (answer == IDYES)
EdittedFlag = 0;
}
if(EdittedFlag == 0)
CloseDialog(1);
}

case TAB_1:
if(nNotifyCode == TCNSELCHANGE)
{
nTab = m_tab1->GetSelectedTab();
StopTimer(); // stop timer when changing tabs
TimerFlag = 0;

select (nTab) // start Tab tests
{
case 0: // about tab
m_abt_btn1->ShowWindow(SWSHOW);
m_abt_txt->ShowWindow(SWSHOW);
...
John Siino, Advanced Engineering Services and Software

John S

[code] :D I got it to work! 
Apparently, I had to include the do-wait loop to allow the message box time to pop-up before closing the dialog.


AxiPile_Init.src

TabDlg::OnClose(),int
{
   if(EdittedFlag != 0)
   {
      int answer = MessageBox(null, "Discard Work?", "Warning! work not saved", MB_YESNO);
      if (answer == IDYES)
         EdittedFlag = 0;
   }

   if(EdittedFlag == 0)
      CloseDialog(1);

//   CloseDialog(0);

return true;
}
[/code]


global sub main()

global sub main()     // Main Subroutine
{

TabDlg AxiPile_Tabs;  // AxiPile_Tab is an instance of the class TabDlg (which is a child class of the class Dialog)

// create parent tab dialog (window) with border, minimize and maximize buttons, etc.
AxiPile_Tabs.Create(0, 0, WIDTH+DwgWidth, HEIGHT+20,
AWS_POPUP | AWS_CAPTION | AWS_SYSMENU | AWS_MINIMIZEBOX ,
0, PROG_TITLE + "  v0." + VYear + VMonth + Vday, 0);

...
AxiPile_Tabs.ShowDialog();

do{
wait();
} until !AxiPile_Tabs.IsValid();

return;
}
...
John Siino, Advanced Engineering Services and Software