2022-05-14
void setup() {
size(200, 200);
background(255);
}
void draw() {
}
void mousePressed() {
stroke(0);
fill(175);
rectMode(CENTER);
rect(mouseX, mouseY, 16, 16);
}
void keyPressed() {
background(255);
}
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可随便点下鼠标,就画了相应的矩形。但当键盘任一键按下时,就清空(实际上是用白色覆盖了。)
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