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Using the Custom AppWizard or Project Template->Tutorial - Creating an Extension with the AppWizard->Adding a Dialog Box to your Extension->Opening the Dialog Box

We will add the code that opens the dialog box to CExtensionState::CExtensionState() so that your dialog box will open automatically whenever your extension runs.

Open source file ExtensionState.cpp and add the two lines in bold:

#include "ExtensionState.h".
#include "resource.h"
#include "MessageDlg.h"

Add the following line in bold:

static int nExtensionCount;    // = 0
class CMessageDlg* g_pMessageDlg;  // = NULL

Modify CExtensionState::CExtensionState() adding the line in bold:


CExtensionState::CExtensionState()
{
 ResetState();
 nExtensionCount++;
 g_pMessageDlg = new CMessageDlg;
}

Modify CExtensionState::~CExtensionState() adding the two lines in bold:

CExtensionState::~CExtensionState()
{
 nExtensionCount--;
 if (nExtensionCount == 0)
 {
   // close all dialogs when no CExtensionState instances left
  if (g_pMessageDlg)
    g_pMessageDlg->DestroyWindow();
 }
}