Win32: retrieving the size of a Cstring in pixels

[Structural Integrity]

Does anyone have an idea of how I can get the size of a string in pixels?
I already found GetTextExtentExPoint but this one takes the HDC's font, which is not the font I'm using.

[pablissimo]

What kind of effect would it have to change the font of the HDC, calculate the size then revert the font have?

Otherwise

http://msdn.microsoft.com/msdnmag/is...c/default.aspx

Has 'an idea'

[Structural Integrity]

Thanks pab, but I'm not sure if that's going to work the way I want.
The CDC is a MFC component, and the moment I include it it messes up my include structure (conflicting with windows.h).

I did get the GetTextExtentExPoint function to work tho, but now my HDC holds a non-standard font type. I don't know if this is a problem... it still runs.

As for your font-swapping suggestion: it's a rather time-critical piece where I need to get the string width. I'm not sure how this would affect exection speed shall do a few tests).

[Raging.Retard]

Originally Posted by Structural Integrity

The CDC is a MFC component, and the moment I include it it messes up my include structure (conflicting with windows.h).

Last time I checked so was CString... which puts an interesting spin on that statement.

[pablissimo]

Originally Posted by Structural Integrity

Thanks pab, but I'm not sure if that's going to work the way I want.
The CDC is a MFC component, and the moment I include it it messes up my include structure (conflicting with windows.h).

I did get the GetTextExtentExPoint function to work tho, but now my HDC holds a non-standard font type. I don't know if this is a problem... it still runs.

As for your font-swapping suggestion: it's a rather time-critical piece where I need to get the string width. I'm not sure how this would affect exection speed shall do a few tests).

Cache the two fonts with CreateFontIndirect i think it's called, then it's really just swapping two addresses when you commit one or the other to the hdc.

[Structural Integrity]

Originally Posted by Raging.Retard

Last time I checked so was CString... which puts an interesting spin on that statement.

CString, C-style string... all the same
OK... I admit it, I use character arrays. My bad.

Pab, the speed is indeed very good. This works good enough!

[JetLinus]

Maybe the thing you want is DrawText? There are some nice Flags. Have a look (I'm sorry, only VB declarations, but I'm sure you'll manage):

Declare Function DrawText Lib "user32" Alias "DrawTextA" _
(ByVal hdc As Long, ByVal lpStr As String, ByVal nCount As Long, _
lpRect As RECT, ByVal wFormat As Long) As Long

· uFormat
Specifies the method of formatting the text. It can be any combination of the following

[.. snip ..]

DT_CALCRECT
 Determines the width and height of the rectangle. If there are multiple
 lines of text, DrawText uses the width of the rectangle pointed to by the
 lpRect parameter and extends the base of the rectangle to bound the
 last line of text. If there is only one line of text, DrawText modifies the right
 side of the rectangle so that it bounds the last character in the line. In either
 case, DrawText returns the height of the formatted text but does not draw the text.

Maybe that's what you need? It might be worth a try, for speed reasons... No idea though...