import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class SWTGCImageExample {
	static final ImageFileNameProvider filenameProvider = zoom -> {
		String path = null;
		switch (zoom) {
		case 150:
			path = "bin/org/eclipse/swt/snippets/eclipse.png";
			break;
		case 200:
			path = "bin/org/eclipse/swt/snippets/eclipse.png";
			break;
		default:
			path = "bin/org/eclipse/swt/snippets/eclipse.png";
		}
		return path;
	};

    public static void main(String[] args) {
    	 Display display = new Display();
         Shell shell = new Shell(display);

         Image image = new Image(display, filenameProvider);
         GC gc = new GC(image);

         // Draw something on the image
         gc.setForeground(display.getSystemColor(SWT.COLOR_RED));
         gc.drawRectangle(50, 50, 100, 100);
         gc.drawText("Hello SWT!", 60, 90);

         // Dispose GC after drawing
         gc.dispose();

         // Dispose image
         image.dispose();

         shell.dispose();
         display.dispose();
    }
}

import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class SWTImageHandleExample {
    public static void main(String[] args) {
        Display display = new Display();

        // Create an image using the display
        Image image = new Image(display, 200, 200);

        // Obtain the handle from the Image using win32_getHandle
        long handle = image.win32_getHandle(image, 100);
        System.out.println("Created image handle: " + handle);

        // Initialize GC with the image
        GC gc = new GC(image);

        // Modify the image using GC
        gc.setBackground(display.getSystemColor(SWT.COLOR_BLUE));
        gc.fillRectangle(50, 50, 100, 100);

        // Dispose GC and Image
        gc.dispose();
        image.dispose();

        display.dispose();
    }
}