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OrbWorks Community Forum • View topic - draw into buffer, from buffer to screen...
Page 1 of 1

PostPosted: Sat Jul 13, 2002 7:11 pm
by design4use
thanks to dewey's help this code is able to draw into a buffer then draw the buffer to the screen (discussion from the Orbworks forum):
// gadget declaration

object myGadget {
// A UIGadget must always be the first member of a gadget
UIGadget gadget;
Draw draw;
// default event handlers
void onopen();
void ondraw();

void testDraw();
};


void myGadget.onopen() {
// attach Draw to gadget
draw.attachGadget(gadget);
}

void myGadget.ondraw() {
// call test function
testDraw();
}

void myGadget.testDraw() {
int prev, i;
Draw dBuffer;//buffer is now local
//create a buffer the size of gadget
dBuffer.copyGadget(gadget);

//draw things into the buffer
dBuffer.begin();
prev = dBuffer.fg(10);
dBuffer.line(clrFG, 10, 10, 50, 50);
dBuffer.frame(clrFG,1,1,gadget.w, gadget.h, 2, 2);
dBuffer.end();

//blast the buffer contents to the screen
draw.begin();
draw.draw(dBuffer, 0,0);
draw.end();
dBuffer.release();
}