func createIconFromResourceEx(pbIconBits *byte, cbIconBits w32.DWORD, fIcon bool, dwVersion w32.DWORD,
cxDesired, cyDesired int32, flags uint32) (w32.HICON, error) {
ret, _, _ := procCreateIconFromResourceEx.Call(
uintptr(unsafe.Pointer(pbIconBits)),
uintptr(cbIconBits),
uintptr(w32.BoolToBOOL(fIcon)),
uintptr(dwVersion),
uintptr(cxDesired),
uintptr(cyDesired),
uintptr(flags),
)
if ret == 0 {
return w32.HICON(0), syscall.GetLastError()
}
return w32.HICON(ret), nil
}
// Fetch an icon handle using a ICONDIRENTRY struct
func getIconHandle(icoData []byte, dirEntry _ICONDIRENTRY) w32.HICON {
ret, _ := createIconFromResourceEx(
&icoData[dirEntry.dwImageOffset],
w32.DWORD(0),
true,
w32.DWORD(0x30000),
int32(dirEntry.bWidth),
int32(dirEntry.bHeight),
_LR_DEFAULT_COLOR)
return w32.HICON(ret)
}