Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Retrieving information about the specified icon
Retrieving the interface–to–IP address mapping table
Saying "Hello World!" with VFP and WinAPI
Testing an ODBC connection for supporting specific functionality
Using GetCompressedFileSize (WinNT only)
Using shared memory to exchange data between two FoxPro applications
Using the Semaphore object to allow only one instance of VFP application running
Using vendor-neutral SQL constructs
Winsock: connecting to a news server (NNTP, port 119)
Winsock: creating a socket that is bound to a specific service provider
Accessing a CD device (cdaudio) with Multimedia Command Strings
Accessing examples contained in this reference from a VFP application
Comparing file times
Converting an HTTP time/date string to a SYSTEMTIME structure
Converting command-line string to a set of Unicode argument strings (WinNT only)
How to display the Properties dialog box for a file (ShellExecuteEx)
How to enumerate forms supported by the specified printer
How to find which fonts Windows uses for drawing captions, menus and message boxes
How to make a VFP form fading out when released (GDI+ version)
Memory usage info for current VFP session (WinNT only)
Obtaining list of tables stored in an ODBC Data Source
Power capabilities of the system: battery, UPS, sleep and hibernation modes, processor throttling
Wininet last error description
Closing Windows
Retrieving information about the specified icon

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More code examples    Listed functions    Add comment     W32 Constants      Translate this page Printer friendly version of this code sample
 
DO declare
 
*| typedef struct _ICONINFO { 
*|   BOOL    fIcon;      0:4
*|   DWORD   xHotspot;   4:4
*|   DWORD   yHotspot;   8:4
*|   HBITMAP hbmMask;   12:4
*|   HBITMAP hbmColor;  16:4
*| } ICONINFO; total bytes = 20
#DEFINE ICONINFO_SIZE  20
 
LOCAL lcModule, lnIndex, hIcon, lcBuffer
 
lcModule = GetModuleName()
lnIndex = 0   && icon index
 
* retrieving an icon handle 
hIcon = ExtractAssociatedIcon(0, lcModule, @lnIndex)
 
lcBuffer = REPLICATE(Chr(0), ICONINFO_SIZE)
= GetIconInfo(hIcon, @lcBuffer)
 
? "Module name:", lcModule
? "Icon handle:", hIcon
?
? "*** Icon info"
? "Icon=1, Cursor=0:", buf2dword(SUBSTR(lcBuffer,1,4))
? "X hotspot:", buf2dword(SUBSTR(lcBuffer,5,4))
? "Y hotspot:", buf2dword(SUBSTR(lcBuffer,9,4))
? "Bitmask Bitmap:", buf2dword(SUBSTR(lcBuffer,13,4))
? "Color Bitmap:", buf2dword(SUBSTR(lcBuffer,17,4))
 
= DestroyIcon(hIcon)
* end of main
 
FUNCTION GetModuleName
#DEFINE BUF_SIZE 250
    LOCAL lcFilename, lnLen
    lcFilename = SPACE(BUF_SIZE)
    lnLen = GetModuleFileName(0, @lcFilename, BUF_SIZE)
RETURN  Left(lcFilename, lnLen)
 
FUNCTION buf2dword(cBuffer)
RETURN Asc(SUBSTR(cBuffer, 1,1)) + ;
    BitLShift(Asc(SUBSTR(cBuffer, 2,1)),  8) +;
    BitLShift(Asc(SUBSTR(cBuffer, 3,1)), 16) +;
    BitLShift(Asc(SUBSTR(cBuffer, 4,1)), 24)
 
PROCEDURE declare
    DECLARE SHORT DestroyIcon IN user32 INTEGER hIcon
 
    DECLARE INTEGER GetModuleFileName IN kernel32;
        INTEGER hModule, STRING @lpFilename, INTEGER nSize
 
    DECLARE INTEGER ExtractAssociatedIcon IN shell32;
        INTEGER hInst, STRING lpIconPath, INTEGER @lpiIcon
 
    DECLARE INTEGER GetIconInfo IN user32;
        INTEGER hIcon, STRING @piconinfo
 
 
 

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1666 bytes  
Created: 2001-12-07 19:46:30  
Modified: 2007-05-02 06:21:35  
Visits in 7 days: 22  
Listed functions:
DestroyIcon
ExtractAssociatedIcon
GetIconInfo
GetModuleFileName
Printer friendly API declarations
My comment:
First this code retrieves the handle to the icon (index=0) for the VFP executable module. Then it uses the GetIconInfo function to obtain some of this icon`s properties.
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