import java.awt.*;

public class Test{
public static void main (String [] args) throws Exception{

Rectangle rect = new Rectangle( Toolkit.getDefaultToolkit().getScreenSize() );
        Robot robot = new Robot();
        int count = 1;
        long beforeTime = System.currentTimeMillis();
        while ( count < 32 ) {
                robot.createScreenCapture( rect );
                count++;
        }
        double time = System.currentTimeMillis() - beforeTime;
        System.out.println( "Seconds it took for 32 screen captures: " + time / 1000 );

}
}

    // convert Win32 pixel format (BGRX) to Java format (ARGB)
    DASSERT(sizeof(jint) == sizeof(RGBQUAD));
    for(int nPixel = 0; nPixel < numPixels; nPixel++) {
        RGBQUAD * prgbq = &pixelData[nPixel];
	jint jpixel = WinToJavaPixel(prgbq->rgbRed, prgbq->rgbGreen, prgbq->rgbBlue);
	// stuff the 32-bit pixel back into the 32-bit RGBQUAD
	*prgbq = *( (RGBQUAD *)(&jpixel) );
    }