Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
GDI+: copying to the Clipboard (a) image of active FoxPro window/form, (b) image file
Adding and deleting Scheduled Tasks using NetScheduleJob API functions
Capturing keyboard activity of another application with the Raw Input API (VFP9)
Enumerating printer drivers installed
How to change display settings: screen resolution, screen refresh rate
Setting the date and time that a file was created
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GDI+: Implementing image scrolling with inertia
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How to convert a bitmap file to monochrome format (1 bpp)
Displaying dimmed window behind VFP top-level form
How to display a user-defined icon in the MessageBox dialog
Enumerating raw input devices attached to the system (keyboard, mouse, human interface device)
How to detect if additional monitor is connected and active
Printing Image File, programmatically set print page orientation to landscape
Extensible Storage Engine class library
Converting image file to .ICO file
How to display Windows On-Screen Keyboard
How to register custom Event Log source
How to copy the image of a form to the Clipboard using Bitmap API functions
Detecting changes in connections to removable drives (VFP9)
Using the NetMessageBufferSend to send messages on the network
Moving shortcut to a specified position on the Windows Desktop
Custom GDI+ class
Creating the Save dialog box to specify the drive, directory, and name of a file to save

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User rating: 8/10 (1 votes)
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5350 bytes  
Created: 2002-01-25 20:14:30  
Modified: 2011-12-10 09:20:22  
Visits in 7 days: 33  
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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