Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
How to change display settings: screen resolution, screen refresh rate
Custom GDI+ class
Storing content of the Clipboard to a bitmap file
Using FoxTray ActiveX control: System Tray Icon and menu attached to VFP form
How to retrieve information about a cache entry (Internet Explorer)
Splash Screen for the VFP application
Adding and deleting Scheduled Tasks using NetScheduleJob API functions
Winsock: sending email messages (SMTP, port 25)
Storing screen shot of a form to bitmap file
Reading the structure of VFP main menu
Mapping and disconnecting network drives
GDI+: copying to the Clipboard (a) image of active FoxPro window/form, (b) image file
Starting an external application in VFP using WinExec
HOWTO: Use the Win32 API to Access File Dates and Times
URL: splitting into its component parts
Using Common Controls: the Header Control
How to convert a bitmap file to monochrome format (1 bpp)
Attaching menu to a top-level form
Building a tree of subdirectories for a given path using FindFile functions
Using FlashWindowEx to flash the taskbar button of the VFP application
Custom HttpRequest class (WinINet)
Drawing Windows predefined bitmaps using the LoadBitmap functions
Retrieving top-child window for the VFP form
Retrieving the User Datagram Protocol (UDP) listener table
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: 196  
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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