SWT provides Image class to draw images. Following step-by-step procedure explains sample application to draw images.
Step 1: Define an image instance and add it to the display.
String imagePath = "C:\\java.png";
Image img = new Image(display, imagePath);
Step 2: Use drawImage method of Graphic context instance.
GC gc = new GC(shell);
gc.drawImage(img, 200, 200);
Step 3: Dispose image and graphic context.
img.dispose();
gc.dispose();
Following is the complete working application.
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class Test {
private static int shellWidth = 500;
private static int shellHeight = 500;
private static String imagePath = "java.png";
private static void addGraphicsToShell(Display display, Shell shell) {
Image img = new Image(display, imagePath);
shell.open();
GC gc = new GC(shell);
gc.drawImage(img, 200, 200);
img.dispose();
gc.dispose();
}
public static void main(String[] args) {
/* Instantiate Display object, it represents SWT session */
Display display = new Display();
/*
* Define Shell, it represent a window, You can add more than one shell
* to Display
*/
Shell shell = new Shell(display);
shell.setSize(shellWidth, shellHeight);
shell.setText("SWT Tutorial");
addGraphicsToShell(display, shell);
/*
* Run the event dispatching loop until an exit condition occurs, which
* is typically when the main shell window is closed by the user.
*/
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
/* Dispose the display */
display.dispose();
}
}
Run above application, you can able to see following window.
Previous Next Home
This post first appeared on Java Tutorial : Blog To Learn Java Programming, please read the originial post: here
