Calling private function from message handler

[titanandrews]

Hello All,
Is it possible to call a private function ( I don't think access modifier matters ) from a message handler function. In particular, I am using OnContextMenu and within this function I want to call another member function to split up some of the logic. But my program crashes every time. Right now, the function doesn't do anything but return true. If I remove the call to the function, then it works okay.



many thanks,

Barry

 

[Cagliostro]

If program crashes it means it is not a problem of public/private. If it was a problem of public/private, the program would not compile.

Ion Filipski

 

[titanandrews]

Right! Didn't think about that. This problem is not a matter of access at all. Any ideas?

 

[titanandrews]

I just realized the problem is not calling a function at all. If I have any conditional processing within the OnContextMenu I get a crash when I call TrackPopupMenu. All I have to have is this.

if (true)
{   
    //...
    pContextMenu->InsertMenu(0,MF_ENABLED | MF_POPUP | MF_STRING | MF_BYPOSITION, reinterpret_cast<UINT> mn_a.GetSafeHmenu()), _T(&quot;Menu A&quot;)); 
    
    //mn_a is the popup CMenu I just created.
}

m_bTrackingPopupMenu = true;
pContextMenu->TrackPopupMenu(...);
m_bTrackingPopupMenu = false;

Then if I remove the if(true), it works! Very strange!

Anyone have ideas about this?

 

[Cagliostro]

What is InsertMenu there for?

Ion Filipski

 

[PerFnurt]

I ususally do it like this:

void CFoo::OnContextMenu(CWnd* pWnd, CPoint point) 
{
	CMenu contextMenus;
	// All context menus share the same menu resource        
	contextMenus.LoadMenu(IDR_CONTEXT_MENUS);

	CMenu* cm = contextMenus.GetSubMenu(0);   // Index of the menu I want to show
	ASSERT(cm);

	cm->TrackPopupMenu(TPM_LEFTALIGN |TPM_RIGHTBUTTON, point.x, point.y, this);
}

/Per
[sub]
"It was a work of art, flawless, sublime. A triumph equaled only by its monumental failure."[/sub]