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Q107165: Stretched or Shrunken Graphics in Viewer

Article: Q107165
Product(s): Miscellaneous Software Development Kits
Version(s): 2.0,2.0a
Operating System(s): 
Keyword(s): 
Last Modified: 12-NOV-1999

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The information in this article applies to:

- Microsoft Multimedia Viewer Publishing Toolkit, versions 2.0, 2.0a 
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Graphics can be included in a Viewer title by using a {bml}, {bmc}, or
{bmr} statement or an embedded pane picture statement (for example,
{ewl}, {ewc}, or {ewr} with MVBMP2). Pages 9-6 though 9-9 of the
Microsoft Multimedia Viewer Publishing Toolkit "Authoring Guide"
describe the pros and cons of using the {bmX} statements and the {ewX}
statements.

For graphics included with {bmX} statements, Viewer will try to
maintain the logical size of the graphic across different displays,
which means the graphic will be shrunk on some displays and stretched
on others. For device-independent bitmaps (DIBs), Viewer uses the
biXPelsPerMeter and biYPelsPerMeter fields in the DIB's
BITMAPINFOHEADER structure to determine how the DIB should be
manipulated for the current display. These fields specify the
horizontal and vertical resolution (in pixels per meter) of the target
device for the bitmap. Note that many painting applications, including
PaintBrush, always write 0s (zeros) in these fields. If these fields
contain 0s, Viewer assumes the target device for the bitmap is
standard VGA.

Viewer does not try to preserve the logical size of graphics included
with {ewX} statements. These graphics are just drawn to the screen
without any stretching.

Additional query words: 2.00 2.00a DIB blt StretchBlt

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Keywords          :  
Technology        : kbHomeProdSearch kbHomeMMsearch kbMMViewer200 kbMMViewer200a
Version           : :2.0,2.0a

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