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WMF Image files

I've created an application that has embedded .wmf image files.  This app works fine under Win2k.  The app also works under Win98, but the images are not visable!  What gives?

PS - I'm using Delphi 4.0
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PaulKorzycki
Asked:
PaulKorzycki
  • 2
1 Solution
 
DrDelphiCommented:
From the Windows 32 API help file:

he Win32 API supports the Windows metafile format to maintain compatibility with applications written for Windows version 3.x. Following are the limitations of this format.

·     A Windows-format metafile is application and device dependent. Changes in the application's mapping modes or the device resolution affect the appearance of metafiles created in this format.
·     A Windows-format metafile does not contain a comprehensive header that describes the original picture dimensions, the resolution of the device on which the picture was created, an optional text description, or an optional palette.
·     A Windows-format metafile does not support the new curve, path, and transformation functions.

·     Some Windows-format metafile records cannot be scaled.
·     The metafile DC associated with a Windows-format metafile cannot be queried (that is, an application cannot retrieve device-resolution data, font metrics, and so on).

 

To convert a Windows-format metafile to an enhanced-format metafile, an application can call the GetMetaFileBitsEx function to retrieve the data from the Windows-format metafile and then call the SetWinMetaFileBits function to convert this data into an enhanced-format metafile.
A developer writing a Win32-based application should avoid using the Windows-format functions and use the enhanced-format functions instead.
==========================================================


Good luck!!




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PaulKorzyckiAuthor Commented:
I was hoping it was some simple setting I was missing.  This whole thing sounds complicated....I ended up converting the images to .BMP.  Kind of a bummer since they don't scale well.

Thanks,
P
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DrDelphiCommented:
You needn't do that. It is ridiculously easy to transform them in Delphi. Behold:


var newMetafile:TMetaFile;
begin
   NewMetaFile:=TmetaFile.Create;
   With NewMetaFile do
   begin
    LoadFromfile('z:\agree.wmf');
    Enhanced:=True;
    SaveToFile('z:\Agree.emf');
    Free;
   end;
end;


Good luck!!
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