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Obtaining the size of scroll bars

Posted on 1998-08-31
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Last Modified: 2013-11-19
I'm using a multicolumned list control.  I'd like to set the column widths so that they fit neatly in the available space (that is, there's no horizontal scroll bar.)  

If I base these widths on the size returned by GetClientArea(), it works fine as long as there's no vertical scroll bar.  

I'd like to take the width of the vertical scroll bar into account - how do I find out what it is?    
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Question by:fisham29
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Accepted Solution

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milenvk earned 20 total points
ID: 1321506
Consider using
GetSystemMetrics(SM_CXVSCROLL)
This returns the width in pixels of the vertical scroll bar.
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Author Comment

by:fisham29
ID: 1321507
Oh, maybe ::GetSystemMetrics( SM_CXVSCROLL )???

Now how do I convert from pixels to client coordinates?
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Author Comment

by:fisham29
ID: 1321508
Oops - you beat me to it.   You were fast!!!  Could you indulge my second question also??
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Author Comment

by:fisham29
ID: 1321509
Never mind.  I guess in MM_TEXT, pixels ARE client coordinates.
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Expert Comment

by:milenvk
ID: 1321510
You have to calculate in order to convert the pixels to client coordinates. You can assume that the scrollbar stays to the left of the right edge of the client rectangle. Then just subtract the pixels returned by GetSystemMetrics(SM_CXVSCROLL) from the right of the client rectangle and you'll get the left edge of the scrollbar in client coordinates.
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