Damage : on client block during Remove..

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   Hi all,
i've experienced some problems with PropertyGrid, more precisely i get an exception from the debugger when trying to call Remove from a PropertygridItem object... i looked at the samples and the same code has no problem there... is there any precaution i should take before removing items in a propertygrid ? thanks

Edited by roberto

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roberto Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 21 July 2005 Location: Italy Status: Offline Points: 3	Post Options Post Reply Quote roberto Report Post Thanks(0) Quote Reply Topic: Damage : on client block during Remove.. Posted: 21 July 2005 at 9:17am
	Hi all, i've experienced some problems with PropertyGrid, more precisely i get an exception from the debugger when trying to call Remove from a PropertygridItem object... i looked at the samples and the same code has no problem there... is there any precaution i should take before removing items in a propertygrid ? thanks Edited by roberto

Oleg Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 21 May 2003 Location: United States Status: Offline Points: 11234	Post Options Post Reply Quote Oleg Report Post Thanks(0) Quote Reply Posted: 21 July 2005 at 11:26pm
	Hello, roberto Hmm... may be you can sent backtrace log to see?
	Oleg, Support Team CODEJOCK SOFTWARE SOLUTIONS

roberto Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 21 July 2005 Location: Italy Status: Offline Points: 3	Post Options Post Reply Quote roberto Report Post Thanks(0) Quote Reply Posted: 22 July 2005 at 3:57am
	Hi, Using DCRT libraries and performing some memory checks ( // Turn on the full heap checking _CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF \| _CRTDBG_CHECK_ALWAYS_DF \| _CRTDBG_DELAY_FREE_MEM_DF \| _CRTDBG_LEAK_CHECK_DF ) ; , i realized that the problem comes when allocating a propertygriditem : int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) { // gas tt ASSERT ( _CrtCheckMemory ( ) ) ; // ********************* Main Frame if (CMDIFrameWnd::OnCreate(lpCreateStruct) == -1) { TRACE("Failed to create FrameWindow\r\n"); return -1; } m_PropertyGrid.Create( CRect(0,0,0,0), AfxGetMainWnd(), 0); CXTPPropertyGridItem* pFisse = m_PropertyGrid.AddCategory(_T("cat")); // gas tt ASSERT ( _CrtCheckMemory ( ) ) ; <---- everything ok at this point CXTPPropertyGridItem* child = new CXTPPropertyGridItem(_T("key"),_T("val")); <-- _CrtCheckMemory ( ) complains here !! pFisse->AddChildItem(child); child->Remove(); Any idea about what causes this problem? thanx in advance

Oleg Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 21 May 2003 Location: United States Status: Offline Points: 11234	Post Options Post Reply Quote Oleg Report Post Thanks(0) Quote Reply Posted: 22 July 2005 at 11:09am
	All seems ok... one thing can be problem. try to replace m_PropertyGrid.Create( CRect(0,0,0,0), AfxGetMainWnd(), 0); to m_PropertyGrid.Create( CRect(0,0,0,0), this, 0); because AfxGetMainWnd() will return NULL in CMainFrame::OnCreate.. May be you can isolate the problem with new sample and attach it here?
	Oleg, Support Team CODEJOCK SOFTWARE SOLUTIONS

roberto Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 21 July 2005 Location: Italy Status: Offline Points: 3	Post Options Post Reply Quote roberto Report Post Thanks(0) Quote Reply Posted: 27 July 2005 at 3:55am
	i realized what the problem was ... on project properties there was a non standard option checked: in c++ / code generation / struct member alignment - there was 1 byte (zp1) instead of Default.. i lost three days around that trivial thing, damn... thank you guys anyway for your suggestions...