Maybe a little bit late since the project is from 2006, but I tried out your code recently (as a pretty good base for my own project, thanks for that!) and found out, that when it comes to the width of the text in pixels you can actually see, than you still have to subtract the space from the very left of the rect (of the virtual bitmap) until the writing really begins. If in doubt, please contact the author via the discussion board below.Ī list of licenses authors might use can be found here.
Italic font license#
This article has no explicit license attached to it, but may contain usage terms in the article text or the download files themselves.
trick, set text background colour to black, before painting! Added this by Mihai Nita - August 17, 2006 Unless I've made a mistake somewhere, I'm not satisfied by the precision of the result by using the Mihai Nita's trick.įillRect(hDCMem,&rect,(HBRUSH)GetStockObject(WHITE_BRUSH)) We now also have a new checkbox to test if using the Mihai Nita's trick will help in getting a faster calculation and at the same time, of course, an accurate result. Set the right-limit of the bounding rectangle to be scanned to just ' sizeText.cx+widthOfTheLastCharacter', as suggested by 'oupoi'.
Painted text can be narrower than text calculated with GetTextExtentPoint32.LONG lWidthOfText=iXmax+1 //+1 because we use 0-based indexes this is the width of the text painted in italic font! found a non-white pixel, save the horizontal position Paint the text in black colour, in a memory device context filled with white colour, like this:įor( int x=rect.right- 1 x >= 0 & !bFound x-)įor( int y= 0 y However, in this article, I am suggesting another approach: This updated version of the EXE includes a new checkbox, to see how adding the 'overhang of the last character' will help in getting a more accurate result. INFO: Using GetCharABCWidths() to Calculate Text Extents.HOWTO: Mix Italic and Regular (Non-Italic) Text (download zipped old Microsoft KB article).INFO: Calculating Text Extents of Bold and Italic Text.Please check these MSDN articles for more details about using the underhang and overhang values: These functions will give us information about the underhang and the overhang of each character of the text we're interested in.
We could try using the GetCharABCWidths or GetCharABCWidthsFloat Win32 API functions. For most of the italic fonts, using these two functions, the calculated width is too narrow and the displayed text looks right-trimmed. The GetTextExtentPoint32 Win32 API function or the DrawText Win32 API function with the DT_CALCRECT flag, will -not- tell us the correct width of text in italic font, only the calculated height is correct. Our purpose is to measure accurately the width of text written in italic font.
0 kommentar(er)
