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.NET Forum / .NET Framework / New Users / September 2007Bug in Graphics.DrawString ?
If you draw a string that consists of repeating lower case characters 'i' or 'l' or 'j' then starting from 20th character the space between characters is more than that before 20th character. I got this with a font "Microsoft Sans Serif" size 8.25 Hello Alexander, > If you draw a string that consists of repeating lower case characters > 'i' or 'l' or 'j' then starting from 20th character the space between > characters is more than that before 20th character. I got this with a > font "Microsoft Sans Serif" size 8.25 Although a bug is possible, I wouldn't expect one in this case. To investigate further, could you send us a complete code example that shows the error, and also state which Visual Studio/.NET Framework version you are using, what is your application type, and your operating system? This way we are better able to verify if its a bug or not. Thanks!  SignatureRegards, Mr. Jani Jarvinen C# MVP Helsinki, Finland janij@removethis.dystopia.fi http://www.saunalahti.fi/janij/ I use Visual Studio 2005 Standard edition SP1. NET Framework 2.0 Windows XP Professional SP2 Code example: // form paint event handler private void Form1_Paint(object sender, PaintEventArgs e) { e.Graphics.DrawString("iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii",this.Font,Brushes.Black, 10,10); TextRenderer.DrawText(e.Graphics, "iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii",this.Font,new Point(10,30), Color.Black); } //---------- See the difference between the output of DrawString and DrawText. Same effect for DrawString() in VS2003 Net 1.1 where TextRenderer isn't available > See the difference between the output of DrawString and DrawText. > Same effect for DrawString() in VS2003 Net 1.1 where TextRenderer I assume this is, because the stem width of the letter is a fractional pixel value so DrawString tries to apply some kerning to make up for this with less then ideal results. You can actually influence this behaviour by setting System.Drawing.Text.TextRenderingHint to e.g. SingleBitPerPixel or AntiAlias like this: e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias But in my opinion the result is even worse. Anyways, normally this shouldn't really be a problem (normally you don't want to display a long string of just i or j). In 1.1 you can P/Invoke to DrawTextEx in user32 (see http://pinvoke.net/default.aspx/user32/DrawTextEx.html). This is what the TextRenderer uses. hth Ben I definitely see this with some code I wrote - looks pretty bad. In my case, the characters get closer together. > If you draw a string that consists of repeating lower case characters > 'i' or 'l' or 'j' then starting from 20th character the space between > characters is more than that before 20th character. I got this with a > font "Microsoft Sans Serif" size 8.25 Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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