Using Win32 functions in Visual FoxPro Image Gallery
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Retrieving information about the specified icon

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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: 87  
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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