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Text output needs clipping?

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_esl View Drop Down
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Joined: 23 January 2007
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Post Options Post Options   Thanks (0) Thanks(0)   Quote _esl Quote  Post ReplyReply Direct Link To This Post 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);
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esc67 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote esc67 Quote  Post ReplyReply Direct Link To This Post 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:
 
 
 
 
 
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