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Timer for Single Click and Double Click

Posted on 1998-07-22
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Last Modified: 2013-11-20
I am making an MFC application that allows the user to draw in a system that I will analyze.  The user will use the left mouse button and right mouse button to draw the system (single click and drag).  The user will double-click with the left mouse button in order for a dialog box to pop-up for the user to enter the item's data.  My problem is when I double click with the left mouse button, the LeftMouseButtonDown function is called before the LeftMouseButtonDoublClick function.  This is causing me great pain b/c it executes code that I don't want it to.  I need some sort of timer to make the OnLeftButtonDown function wait to see if the user is double-clicking before calling that function.  Help ME!!!!
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Question by:stchsc
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chensu earned 200 total points
ID: 1319656
You can use the GetDoubleClickTime function retrieves the current double-click time for the mouse. In your OnLButtonDown, set a one shot timer using the timeSetEvent function. In your OnLButtonDblClk, set a flag to indicate if it is a double-click. When the timer callback function is called, check the flag and do your LeftMouseButtonDown function if it is not a double-click. This is just a rough design.
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by:stchsc
ID: 1319657
Thanks for your reply.  However, I thought of a way around it.  It is similar to what you have suggested.  Thanks for the input.
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