Thanks. Found that AmouseObj would even work better for my situation.

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>The MouseUp() event does this.
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>PROCEDURE Object.MouseUp
>LPARAMETERS nButton, nShift, nXCoord, nYCoord
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>Parameters
>You must include an LPARAMETERS or PARAMETERS statement in the event procedure and specify a name for each parameter. Visual FoxPro passes the MouseUp event parameters in the following order.
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>nButton
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>In Visual FoxPro for Windows, contains a number that specifies which button was released to trigger the event: 1 (left), 2 (right), or 4 (middle).
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>nXCoord, nYCoord
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>Contains the current horizontal (nXCoord) and vertical (nYCoord) position of the mouse pointer within the form. These coordinates are always expressed in terms of the form's coordinate system in the unit of measurement specified by the ScaleMode property of the form.