tkinter 用鼠标在任何方向创建矩形

Question

有什么方法可以在 tkinter canvas 上通过单击鼠标从右上边缘到左下边缘绘制矩形（与传统方式不同）？这是参考creating rect with mouse drag

    def on_button_press(self, event):
         # save mouse drag start position
        self.start_x = event.x
        self.start_y = event.y

        # create rectangle if not yet exist
        #if not self.rect:
        self.rect = self.canvas.create_rectangle(self.x, self.y, 1, 1, fill="black")

    def on_move_press(self, event):
            curX, curY = (event.x, event.y)

            # expand rectangle as you drag the mouse
            self.canvas.coords(self.rect, self.start_x, self.start_y, curX, curY)

    def on_button_release(self, event):
        pass

Answer 1

感谢 acw1668 这条线是完美的解决方案

self.rect = self.canvas.create_rectangle(self.start_x, self.start_y, self.start_x, self.start_y, fill="black")

tkinter 用鼠标在任何方向创建矩形

tkinter create rect with mouse in any direction

python

mouse

tkinter

drag

tkinter-canvas