Catching a mouse click.

[thebarslider]

I am using Java2 with OpenGl to draw a triangle of vertices red, blue and green. I want to be able to press R and then click on the applet to resize the red vertex of my triangle. So far i have a KeyListener and a MouseListener but so far i have to click then press a key to resize the triangle. I want to be able to press a key then click to resize the triangle. How do i make the program wait for a mouse event before drawing the triangle?

case KeyEvent.VK_R:
message = "Set Red Vertex with Mouse";

// I want to get the program to wait for a mouse event at this point. How do i do that?

vertex[0] = x;
vertex[1] = y;
break;

I already have the below mouseClicked method:

public void mouseClicked(MouseEvent e) {
lastClick = e.getPoint();
// gets the last click in screen coords
}

I am really quite stuck on this problem, any help would be gladly accepted.

Mark.

 

[idarke]

I don't think you can "make it wait" like you want. Hitting a key or clicking a mouse generates an event, and your listeners have to handle it. I think you could move the vertex set lines into the mouseClicked method, though, and just set a flag in the keyPressed method to indicate which key was pressed. Your mouseClicked method could check to see if the flag is set and, if not, do nothing.

 

[pipk]

I haven't checked but I am sure there would be an isClicked() or isPressed() method you could call to check whether or not a key or mouse button is being used at the time you would like to initiate your process? probably wrong though...