Extracting Icons from Executable Files

An application can use the ExtractIcon function to retrieve the handle of an icon from a specified executable file, dynamic-link library, or icon file. The following example uses the DragQueryPoint function to retrieve the coordinates of the point where a file was dropped, the DragQueryFile function to retrieve the filename of a dropped file, and the ExtractIcon function to retrieve the handle of the first icon in the file, if any.

POINT pt;

WORD cFiles;

HDC hdc;

char lpszFile[80];

HANDLE hCurrentInst, hicon;

DragQueryPoint((HANDLE) wParam, &pt);

cFiles = DragQueryFile((HANDLE) wParam, 0xFFFF, NULL, NULL);

if(cFiles > 1) {

TextOut(hdc, pt.x, pt.y,

"Please drop only one icon file.", 31);

return FALSE;

}

else {

DragQueryFile((HANDLE) wParam, 0, lpszFile, sizeof(lpszFile));

hCurrentInst = (HINSTANCE) GetWindowLong(hwnd, GWL_HINSTANCE);

hicon = ExtractIcon(hCurrentInst, lpszFile, 0);

if (hicon == NULL)

TextOut(hdc, pt.x, pt.y, "No icons found.", 15);

else if (hicon == (HICON) 1)

TextOut(hdc, pt.x, pt.y,

"File must be .EXE, .ICO, or .DLL.", 33);

else

DrawIcon(hdc, pt.x, pt.y, hicon);

}

DragFinish((HANDLE) wParam);

Software for developers

Delphi Components
.Net Components
Software for Android Developers

More information resources

MegaDetailed.Net
Unix Manual Pages
Delphi Examples

Databases for Amazon shops developers

Amazon Categories Database
Browse Nodes Database