[Mono-bugs] [Bug 479037] New: Passing PixelFormat.format24bppRgb to Bitmap.Clone returns a 32bit bitmap

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Tue Feb 24 08:12:34 EST 2009


           Summary: Passing PixelFormat.format24bppRgb to Bitmap.Clone
                    returns a 32bit bitmap
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.2.x
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Sys.Drawing.
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: benjamin.dewaal at konicaminolta.eu
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:
Gecko/2009011913 Firefox/3.0.6

Passing System.Drawing.Imaging.PixelFormat.format24bppRgb to Bitmap.Clone
returns a 32bit image.

Reproducible: Always

Steps to Reproduce:
Code such as the following:

Bitmap bmp = new Bitmap(myStream); //Where myStream is a bitmap I loaded
Bitmap bmp24 = bmp.Clone(new Rectangle(0, 0, bitmap2.Width, bitmap2.Height),
Actual Results:  
After this, bmp24 contains a 32bit image (as determined by the bit count value
in the bytes of the bitmap itself).

Expected Results:  
Same as Microsoft's .NET Framework: The same code under .NET Framework returns
a 24bit image.

Tested and confirmed by myself on Mono 2.2_5 under MacOS X and reported to me
by a third party under Mono 2.x(?) under GNU/Linux.

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