Text output needs clipping?

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   I noticed that when the font is set to Consolas and ClearType rendering is on, I can see that sometimes the last column of pixels of a text block is overdrawn by the next block, cropping round letters:

The effect disappeared when I changed CXTPSyntaxEditPaintManager::DrawLineText to use ExtTextOut with clipping:
...
CRect rcBGex(nOutCol, /*nTxtBottom - 1 -> */iLine, nOutCol + nTxtWidth, nTxtBottom);
...
pDC->FillSolidRect(&rcBGex, pDC->GetBkColor());
/* pDC->TextOut(nOutCol, iLine, pOutText, nOutTextLen); -> */
pDC->ExtTextOut(nOutCol, iLine, ETO_CLIPPED|ETO_OPAQUE, &rcBGex, pOutText, nOutTextLen, NULL);

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_esl Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 23 January 2007 Status: Offline Points: 1	Post Options Post Reply Quote _esl Report Post Thanks(0) Quote Reply Topic: Text output needs clipping? Posted: 23 January 2007 at 6:31pm
	I noticed that when the font is set to Consolas and ClearType rendering is on, I can see that sometimes the last column of pixels of a text block is overdrawn by the next block, cropping round letters: The effect disappeared when I changed CXTPSyntaxEditPaintManager::DrawLineText to use ExtTextOut with clipping: ... CRect rcBGex(nOutCol, /nTxtBottom - 1 -> /iLine, nOutCol + nTxtWidth, nTxtBottom); ... pDC->FillSolidRect(&rcBGex, pDC->GetBkColor()); /* pDC->TextOut(nOutCol, iLine, pOutText, nOutTextLen); -> */ pDC->ExtTextOut(nOutCol, iLine, ETO_CLIPPED\|ETO_OPAQUE, &rcBGex, pOutText, nOutTextLen, NULL);

esc67 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 09 June 2005 Status: Offline Points: 29	Post Options Post Reply Quote esc67 Report Post Thanks(0) Quote Reply Posted: 07 February 2007 at 12:17am
	I noticed a similar problem in the MDI Text Editor sample (straight Debug build, no changes). In my case entire letters are missing. See how the "e" in "parent:file" is totally occluded: