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Using OWL's DrawText function

Posted on 1997-10-27
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Last Modified: 2012-08-14
I used DrawText function to write some text on a specific DC on my client window.
Now I want to erase that text only by giving a reference to the DC.
I used SetROP2( R2_NOTXORPEN ) an it works with rectangles, for example, but not with DrawText.

How should I do it? And why does it not work the other way ?
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Question by:sagitarian
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JensUniweb earned 150 total points
ID: 1172119
I'm not 100% sure but the text functions does not use the pen. You use SetTextColor(). And there you can not set the NOTXOR. What you can do is write the text to a DC in memory and use BitBlt() to copy the text into your normal DC. And there you can use mask and so to get the effect you want. I could get you some example code. But not today.
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by:sagitarian
ID: 1172120
I'm definitly sure that text functions do not use the pen. I tried to change the pen color and text still came out in black.
About the SetTextColor() function, I end up with another problem I have which is to find out the way to get the system background color. If I could do that, it would be simple.
The BitBlt() function seems to be more complicated and would need an example.

Thanks very much for the answer!
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Expert Comment

by:zaWasp
ID: 7886438
hmm, I have a similar question. In my app, I have a splitter, and I want to display the splitting percentage between two panels, using DrawText (or TextOut), right beside the mouse cursor. However, when I move the mouse, the text written at previous cursor position is not erased. How can I do that?
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