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Drawtext

Posted on 2013-12-16
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Hi!

What precisely should Drawtext with DT_CALCRECT return? Specifications say that it returns the rectangle needed for the text, but it doesn't!

I have a fixed width font where I run DrawText/DT_CALCRECT for both the string "9" and the string "99". They return a width of 9 and 18. By drawing vertical lines I can clearly see that I need to add 7 to move a vertical line one character and 14 to move it 2 characters. So why does Drawtext return 9??? GetTextExtent and GetTextMetrics all return 9 for the character width as well.

I run this from within a routine that is called during drawing of a control, so the DC has the correct font selected already (I think).

Thanks for any help!

P.S.: This is a simplified version of my question http://www.experts-exchange.com/Microsoft/Development/Q_28317440.html, since I got no response to that so far.
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Question by:Knut Hunstad
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by:Knut Hunstad
ID: 39721250
Oh, yes, I forgot: the space needed for the text "9" is actually only 6 and for "99" it's 13, since there is a space between each character...
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Knut Hunstad earned 0 total points
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I found the problem. I was using this with a Stingray CGXEditControl, in it's GetCellRect. What happened was that GetDC within GetCellRect did not return the same DC as the on in Draw!

So now I calculate the necessary width in Draw() and use it in GetCellRect.
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