Text turns to mush

[zapper222]

I am using this code to print color text to a rich edit box:

void CRichEditDlg::OnBnClickedButton1()
{
	// TODO: Add your control notification handler code here
	CHARFORMAT Cfm;

	m_Richer.GetSelectionCharFormat(Cfm);

	Cfm.cbSize = sizeof(CHARFORMAT);
	Cfm.dwMask = CFM_COLOR|CFM_BOLD;
	Cfm.dwEffects = CFE_BOLD; 
	Cfm.crTextColor = RGB(0,0,255);

	m_Richer.SetSelectionCharFormat(Cfm); 

	CString text = "Now is the time for all good men to come to the aid of the party";

   SETTEXTEX SetTextEx;
   SetTextEx.codepage = CP_ACP;
   SetTextEx.flags = ST_SELECTION;

   m_Richer.SetSel(-1,-1);
   m_Richer.SendMessage(EM_SETTEXTEX,(WPARAM)&SetTextEx, (LPARAM) (LPCTSTR)text);
}

Everything works well, the text prints to the box and the colors are correct, but when I scroll up or down using the thumb, all the text gets distorted. Any ideas?

Thanks
Zapper222

[zapper222]

I think I have tracked this down to the WinXP bug that distorts text when smooth scrolling is enabled. So I tried to handle the Vertical Scroll for the rich text edit box.
Right click on the rich text edit, select Add Event Handler...Select my class and Message type as EN_VSCROLL select Add and Edit then add this code:

void CMyScanDlg::OnEnVscrollRicher()
{
	// TODO: Add your control notification handler code here
	Invalidate();   
        UpdateWindow();
}

and.......... it doesn't work
The text still "melts" when you use the vertical scroll.
Any help appreciated.

Zapper

[zackattach]

Did you ever fix this? I'm trying to draw rectangles that seem to "melt" upon scrolling in either direction. Also, the rectangles are completely redrawn when I minimize then restore the window but apparently the origin moves.

My code to draw the rectangles is

CRect TempRect = pDoc->GetNode(i); // The points for the rectangle
OnPrepareDC(pDC);
pDC->DPtoLP(&TempRect);
pDC->Rectangle(TempRect);

I have tried a variety of fixes in OnPrepareDC included setting the mapping mode to MM_LOENGLISH and setting the origin at 0, 0 but nothing works.

Any help?