Drag window when using overrideredirect

问题

I know how to remove a border from a Tkinter window using overrideredirect, but whenever I do that the window becomes unresponsive. I can't move it using alt and dragging, or any other method.
I want to make an application that looks like one of those "riced" applications that are just a bare window, and obviously I can't get very far if it just sits unresponsive in the upper-left corner. So, how do I do this?

回答1:

To make the window draggable, put bindings for <Button-1> (mouse clicks) and <B1-Motion> (mouse movements) on the window.

All you need to do is store the x and y values of a mouse down event and then during mouse motion events, you position the window based on the current pointer x and y, delta the original event x and y.

The handler for the mouse click binding stores the original event x and y.

The handler for the mouse movement binding calls the TopLevel method geometry() to reposition the window, based on current mouse position and the offset you have stored from the most recent mouse click. You supply a geometry string to the geometry method.

Here is a very minimal example which does not take into account the edges of the screen:

import tkinter

class Win(tkinter.Tk):

    def __init__(self,master=None):
        tkinter.Tk.__init__(self,master)
        self.overrideredirect(True)
        self._offsetx = 0
        self._offsety = 0
        self.bind('<Button-1>',self.clickwin)
        self.bind('<B1-Motion>',self.dragwin)

    def dragwin(self,event):
        x = self.winfo_pointerx() - self._offsetx
        y = self.winfo_pointery() - self._offsety
        self.geometry('+{x}+{y}'.format(x=x,y=y))

    def clickwin(self,event):
        self._offsetx = event.x
        self._offsety = event.y


win = Win()
win.mainloop()

来源：https://stackoverflow.com/questions/29641616/drag-window-when-using-overrideredirect

标签

python

tkinter

draggable