WM_MOUSEMOVE; mouse moves one axis at a time?
Hey there,
I was making a simple click+hold and drag navigation system for my app and I noticed something while debugging.
It appears to me that when the message WM_MOUSEMOVE is sent, the mouse can only be registered moving in the x-axis or the y-axis but, never both.
Which is to say, it can't move diagonally in one step; it must first move either horizontal (by one pixel) then vertically (by one pixel) or vice-versa.
Is this true?
I ask this because, I could make my code more efficient; knowing it could only ever be moving one direction at a time.
I was making a simple click+hold and drag navigation system for my app and I noticed something while debugging.
It appears to me that when the message WM_MOUSEMOVE is sent, the mouse can only be registered moving in the x-axis or the y-axis but, never both.
Which is to say, it can't move diagonally in one step; it must first move either horizontal (by one pixel) then vertically (by one pixel) or vice-versa.
Is this true?
I ask this because, I could make my code more efficient; knowing it could only ever be moving one direction at a time.
Last edited on
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