你正在比较苹果和橘子。这条线:
if mousePt <= xValue and mousePt <= yValue:
是大致相同的话说:
if Point(123, 45) <= 64 and Point(123, 45) <= 64:
这是没有意义的点比较的宽度和高度。您需要的宽度和高度与图像的中心位置,从鼠标的位置相结合,并提取X & Y值:
from graphics import *
win = GraphWin("Image Button", 400, 400)
imageCenter = Point(200, 200)
# 64 x 64 GIF image from http://www.iconsdb.com/icon-sets/web-2-green-icons/video-play-icon.html
startImage = Image(imageCenter, "video-play-64.gif")
startImage.draw(win)
imageWidth = startImage.getWidth()
imageHeight = startImage.getHeight()
imageLeft, imageRight = imageCenter.getX() - imageWidth/2, imageCenter.getX() + imageWidth/2
imageBottom, imageTop = imageCenter.getY() - imageHeight/2, imageCenter.getY() + imageHeight/2
start = False
while not start:
# Obtain mouse Point(x, y) value
mousePt = win.getMouse()
# Test if x,y is inside image
x, y = mousePt.getX(), mousePt.getY()
if imageLeft < x < imageRight and imageBottom < y < imageTop:
print("Bullseye!")
break
win.close()
这个特定的图标显示为一个圆圈,您可以点击区域包括其矩形边界框,其中一些在圆外。可以将点击次数限制为可见图像,但需要更多工作。