Codejock Developer Community : Problem with CCustomItemSlider in PropertyGrid. http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 20 Apr 2026 07:23:56 +0000 Mon, 08 Jul 2013 17:44:33 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=21778 <![CDATA[Codejock Developer Community]]> http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ <![CDATA[Problem with CCustomItemSlider in PropertyGrid. : SOLVED:Comparing the source code...]]> http://forum.codejock.com/forum_posts.asp?TID=21778&PID=71339&title=problem-with-ccustomitemslider-in-propertygrid#71339 Author: Ronney
Subject: 21778
Posted: 08 July 2013 at 5:44pm

SOLVED:
Comparing the source code with version 15.3.1, I found the line "m_pGrid->Refresh()" out of place:

void CXTPPropertyGridItem::OnMarkupChanged()
{
// update markup

XTPMarkupReleaseElement(m_pMarkupValue);

if (!m_pGrid || !m_pGrid->m_pGrid)
return;

if (m_pGrid->m_pGrid->GetMarkupContext() && GetMarkupTemplate().GetLength())
{
CString final_markup = GetMarkupTemplate();
final_markup.Replace(XTP_PG_ITEMVALUE_TO_REPLACE_IN_MARKUP, GetValue());

m_pMarkupValue = XTPMarkupParseText(m_pGrid->m_pGrid->GetMarkupContext(), final_markup);
}

m_pGrid->Refresh(); // to force call MeasureItem, markup should be changed
}


Previously it was inside the last 'if':

void CXTPPropertyGridItem::OnMarkupChanged()
{
// update markup

XTPMarkupReleaseElement(m_pMarkupValue);

if (!m_pGrid || !m_pGrid->m_pGrid)
return;

if (m_pGrid->m_pGrid->GetMarkupContext() && GetMarkupTemplate().GetLength())
{
CString final_markup = GetMarkupTemplate();
final_markup.Replace(XTP_PG_ITEMVALUE_TO_REPLACE_IN_MARKUP, GetValue());

m_pMarkupValue = XTPMarkupParseText(m_pGrid->m_pGrid->GetMarkupContext(), final_markup);

m_pGrid->Refresh(); // to force call MeasureItem, markup should be changed
}
}

]]> Mon, 08 Jul 2013 17:44:33 +0000 http://forum.codejock.com/forum_posts.asp?TID=21778&PID=71339&title=problem-with-ccustomitemslider-in-propertygrid#71339 <![CDATA[Problem with CCustomItemSlider in PropertyGrid. : I figured out how to use CXTPP...]]> http://forum.codejock.com/forum_posts.asp?TID=21778&PID=71338&title=problem-with-ccustomitemslider-in-propertygrid#71338 Author: Ronney
Subject: 21778
Posted: 08 July 2013 at 4:28pm

I figured out how to use CXTPPropertyGridItem::AddSliderControl(). But it solves the problem partially. The 'black issue' does not appears anymore, but I still cannot drag the cursor.

If I insist dragging, the software crashes, falling in the condition bellow, the same with the PropertyGrid sample program:

Output:

HEAP[playlist.exe]: HEAP: Free Heap block 05CE0D28 modified at 05CE0DF4 after it was freed
Windows has triggered a breakpoint in playlist.exe.

This may be due to a corruption of the heap, which indicates a bug in playlist.exe or any of the DLLs it has loaded.


Callstack:

  ntdll.dll!_RtlpBreakPointHeap@4()  + 0x20 bytes
  ntdll.dll!@RtlpAllocateHeap@24()  + 0x33167 bytes
  ntdll.dll!_RtlAllocateHeap@12()  + 0x11f70 bytes
  ntdll.dll!_RtlDebugAllocateHeap@12()  + 0xcc bytes
  ntdll.dll!@RtlpAllocateHeap@24()  + 0x32ff9 bytes
  ntdll.dll!_RtlAllocateHeap@12()  + 0x11f70 bytes
  user32.dll!_UserRtlAllocMem@4()  + 0x16 bytes
  user32.dll!_MBToWCSEx@24()  + 0x118ce bytes
  user32.dll!_DrawTextExA@24()  + 0x3a bytes
  user32.dll!_DrawTextA@20()  + 0x3d bytes
> Playlist.exe!CDC::DrawTextA(const char * lpszString, int nCount, tagRECT * lpRect, unsigned int nFormat)  Line 596 + 0x15 bytes C++
  Playlist.exe!CXTPPropertyGridPaintManager::FillPropertyGrid(CDC * pDC)  Line 283 + 0x14 bytes C++
  Playlist.exe!CXTPPropertyGrid::OnPaint()  Line 497 C++
  Playlist.exe!CWnd::OnWndMsg(unsigned int message, unsigned int wParam, long lParam, long * pResult)  Line 2460 C++
  Playlist.exe!CXTPPropertyGrid::OnWndMsg(unsigned int message, unsigned int wParam, long lParam, long * pResult)  Line 1615 + 0x13 bytes C++
  Playlist.exe!CWnd::WindowProc(unsigned int message, unsigned int wParam, long lParam)  Line 2137 + 0x17 bytes C++


]]> Mon, 08 Jul 2013 16:28:02 +0000 http://forum.codejock.com/forum_posts.asp?TID=21778&PID=71338&title=problem-with-ccustomitemslider-in-propertygrid#71338 <![CDATA[Problem with CCustomItemSlider in PropertyGrid. : Since version 16.1.0 I&#039;m...]]> http://forum.codejock.com/forum_posts.asp?TID=21778&PID=71336&title=problem-with-ccustomitemslider-in-propertygrid#71336 Author: Ronney
Subject: 21778
Posted: 08 July 2013 at 2:01pm

Since version 16.1.0 I'm having an issue with CCustomItemSlider, from Property Grid sample: When the user clicks on the bar, it becomes black and It's not possible to drag the slider cursor also. The problem occurs on the sample program also.


al Studio asserts with a message about heap corruption. 
]]> Mon, 08 Jul 2013 14:01:54 +0000 http://forum.codejock.com/forum_posts.asp?TID=21778&PID=71336&title=problem-with-ccustomitemslider-in-propertygrid#71336