如何计算邮寄消息的位置？ [英] how to calculate postmessage's position？

问题描述

当我想使用发送单击消息的postmessage API时，我想知道如何计算组件的位置？



i知道位置的第四个参数，公式是x + y * 65536。

但我不知道如何得到x和y的值？

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也许我没有解释得非常好，

i意味着如何在客户端获取鼠标x和y坐标。

获得x和y坐标后，如何计算和设置第四个参数。

所以我可以点击我需要的地方。

解决方案

你还没读过msdn吗？ ：mad：



http://msdn.microsoft.com/en-us/library/windows/desktop/ms645616(v = vs.85）.aspx [ ^ ]





他们写的是：

Quote：

lParam

低位字指定光标的x坐标。坐标相对于客户区的左上角。

高位字指定光标的y坐标。坐标相对于客户区的左上角。

x和y是在客户端点击鼠标的坐标。 / BLOCKQUOTE>

when i want to use postmessage API that send single click message,i want to know how to calculate the component's position?

i konw the forth parameter that is position，the formula is that x+y*65536。
But i don't know how to get x and y's value?
------------------------------------------------------------------------------------------------
maybe i didn't explain very well,
i mean's how to get the mouse x and y coordinates in the client.
after got the x and y coordinates,how to calculate and set the forth parameter.
so that i can click somewhere that i need.

解决方案

havent you read the msdn? :mad:

http://msdn.microsoft.com/en-us/library/windows/desktop/ms645616(v=vs.85).aspx[^]


They is written:

Quote:

lParam
The low-order word specifies the x-coordinate of the cursor. The coordinate is relative to the upper-left corner of the client area.
The high-order word specifies the y-coordinate of the cursor. The coordinate is relative to the upper-left corner of the client area.

x and y are the coordinates which got the mouse click in the client.

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