SetZoomRect

FPCM_SETZOOMRECT

struct SFPCSetZoomRect
{
    // [in]
    long left;
    // [in]
    long top;
    // [in]
    long right;
    // [in]
    long bottom;
 
    // [out]
    HRESULT hr;
};

void InvokeSetZoomRect(HWND hwndFlashPlayerControl, long left, long top, long right, long bottom)
{
    SFPCSetZoomRect info;
 
    info.left = left;
    info.top = top;
    info.right = right;
    info.bottom = bottom;
 
    ::SendMessage(hwndFlashPlayerControl, FPCM_SETZOOMRECT, 0, (LPARAM)&info);
 
    if FAILED(info.hr)
        // Error
    {
        // ...
    }
    else
        // OK
    {
        // ...
    }
}