Need accurate text extent

[Kelly Cox]

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.

[mshadow65]

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

[olivthill]

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().