Need accurate text extent

How can I get an accurate text extent. I have tried using CDC::GetTextExtent but often the horizontal extent returned is not accurate. I need an accurate value because I am drawing a string in a box and I dont want the string to overrun the box if it wont fit in the box. Using the GetTextExtent function it returns a value that says the string will fit in the box when it in actuality it wont. Anyone have any ideas on how I can get the accurate horizontal extent of the string. Any help is greatly appreciated.

Hi everyone!

I have the same problem !

I need to compute a *PRECISE AND ACCURATE* BOUNDING rectangle around a text

I tried with several methods with Windows32 API(s)

- GetTextExtentPoint32
- DrawText (with DT_CALCRECT)
- GetCharWidth32 (Obtaining the width of every char of the string)

I'm using MM_ANISOTROPIC mapping into my device context and seems that the X-Extension of the text is always different by the effective text drawned into the device. This happen when the zoom/scale factor is different by 1.0

What i'm doing of wrong?
Please help me


Thank you
Furno Gianluca

GetCharABCWidths() is working well for me, although it can be tricky sometimes, see http://www.codeguru.com/forum/showthread.php?t=369528
But I don't know how it works with a zoom/scale factor, because I specify the size of the font in the first argument of CreateFont().