Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
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Copying picture of the active form to the Clipboard using Enhanced Metafile API functions
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Enumerating raw input devices attached to the system (keyboard, mouse, human interface device)
How to print FoxPro form
GDI+: copying to the Clipboard (a) image of active FoxPro window/form, (b) image file
Creating a clipping region from the path selected into the device context of a form
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FindText -- the hopeless and useless Common Dialog
How to create transparent areas inside a form -- punching holes in the form
Enumerating Processes -- WinNT
Using EnumPrinters function to enumerate locally installed printers
Placing a button on the VFP form as a new child window
Retrieving the name of the primary domain controller (PDC) and join status information
A procedure for setting file times
Storing screen shot of a form to bitmap file
Using the DeleteFile
Disabling mouse and keyboard input for the main VFP window (with the app still running)
Using the Semaphore object to allow only one instance of VFP application running
How to print a bitmap file
Attaching menu to a top-level form
Creating the Save dialog box to specify the drive, directory, and name of a file to save

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5350 bytes  
Created: 2002-01-25 20:14:30  
Modified: 2011-12-10 09:20:22  
Visits in 7 days: 189  
Listed functions:
CommDlgExtendedError
GetActiveWindow
GetSaveFileName
GlobalAlloc
GlobalFree
GlobalSize
Printer friendly API declarations
My comment:
The OPENFILENAME structure length depends on the OS, and can be 76 or 88 bytes.

This is important, because invalid parameter creates an error. Note that this structure is used with GetOpenFileName and GetSaveFileName functions. There is substantial set of OFN flags to control the dialog behaviour.

To fill the OPENFILENAME structure -- as well as almost all other Comdlg structures used -- you need not just strings but pointers to strings. There is a class PChar in this examples, which creates such extended strings. In more simple cases the StrDup is quite enough to accomplish this task.
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