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draw rect problem?

nick cheng
Greenhorn

Joined: Oct 31, 2004
Posts: 11
public void paint(Graphics g) {
if (!buffered){
buffer = createImage(50, 50);
bufferG=buffer.getGraphics();

buffered=true;
}
bufferG.setColor(Color.RED);

bufferG.drawRect(0, 0, (int) imageSize.getWidth(),
(int) imageSize.getHeight());
g.drawImage(buffer,100,100,this);
}

in this Applet file ,i set the background colour is "black" in void init()
,then i set some images one the surface,and last i use double buffer draw a rect image,but when i draw the image,the rect become ,a black solid rect ,how to make it become tranparent?
 
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subject: draw rect problem?