Sorry if the answer is too obious.

In my app the user can drag an item with the mouse
as long as the (mouse-) button is pressed. When the
user leaves the window and releases the mouse button
(outside the window) I don't get an "OnLButtonUp"
message for my window (of course not).

How am I informed that the mouse has left my window?
I tried spy++ but I didn't find a message that
would help me.

Or is there a way to check the state of the mouse
button as soo as the mouse enters the window again?

Bye & Thanks,
Martin

cU
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You can accomplish this by capturing the mouse.

In your view's OnMouseMove function check to see if
this view has the mouse captured - if not capture the
mouse with SetCapture()

Then check to see if the mouse co-ords are within the
client rect of the view. If not, then the mouse has left
the view - ReleaseCapture(), and carry on as normal.

Pete

(remove the XXX to e-mail)

Are you capturing the mouse on your button down event using
SetCapture?

Dave
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[...]

Martin

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Martin

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Martin