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Environment: Visual C++ 6.0 with Service Pack 3, Windows 9x, Windows NT 4.0 with Service Pack 6a and Windows 2000
This sample is an MFC application using the document/view architecture that can load, display, and print graphics files such aske GIF, JPEG, BMP (bitmap), ICO (icon), WMF (metafile), and EMF (Win32-enhanced metafile). It shows:
- how to use the OleLoadPicturePath function and the IPicture interface to load and display those graphics files.
- how to support more than one file extension per MFC document type.
(Look into the ImgViewerDoc.cpp, ImgViewerView.cpp, and MainFrm.cpp files.)
(Look into the MulExtDocTmp.cpp, MulExtDocTmp.h, and ImgViewer.cpp files.)
Please see the following articles in the Microsoft Knowledge Base:
Q218972How To Load and Display Graphics Files w/LOADPIC.EXE
(Note that LOADPIC.EXE does not handle palettes. As a result, it won't display a 256-color image correctly in 256-color mode. Also, it uses the OleLoadPicture function instead of the OleLoadPicturePath function.)
Q141921HOWTO: How to Support Two File Extensions per MFC Document Type
Q198538DocMgrEx.exe Assoc Multiple File Extensions w/1 Doc Type