将按钮添加到gwt小部件

Question

How can i add a button without text only with marker for forward and backward action for example for widget ListBox in gwt? i tried something like this:

 Button btn = new Button("Forward");
        btn.setHTML(("<img border='0' src='image\\B_forwards.png' />"));

but can't get the picture to show on button.

Answer 1

You don't need a button. Add an Image widget, and add a ClickHandler to it.

Answer 2

If you just want to add an image to a normal GWT Button, then PushButton is the way to go:

PushButton pushButton = new PushButton(new Image("test.png"));

Otherwise, if you just want to have a clickable image, you still can do that:

public interface MyResources extends ClientBundle{
    MyResources INSTANCE = GWT.create(AppImages.class);
    @Source("image.gif")
    ImageResource image();
}

Image image = new Image( MyResources.INSTANCE.image() );
image.addClickHandler(new ClickHandler() {
     public void onClick(ClickEvent event) {
         // do whatever you want
     }
} );