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The framework calls this member function when the user presses the middle mouse button.

afx_msg void OnMButtonDown(
   UINT nFlags,
   CPoint point 


Indicates whether various virtual keys are down. This parameter can be any combination of the following values:
  • MK_CONTROL   Set if the CTRL key is down.
  • MK_LBUTTON   Set if the left mouse button is down.
  • MK_MBUTTON   Set if the middle mouse button is down.
  • MK_RBUTTON   Set if the right mouse button is down.
  • MK_SHIFT   Set if the SHIFT key is down.
Specifies the x- and y-coordinate of the cursor. These coordinates are always relative to the upper-left corner of the window.


Note   This member function is called by the framework to allow your application to handle a Windows message. The parameters passed to your function reflect the parameters received by the framework when the message was received. If you call the base-class implementation of this function, that implementation will use the parameters originally passed with the message and not the parameters you supply to the function.

See Also

CWnd Overview | Class Members | Hierarchy Chart | CWnd::OnMButtonDblClk | CWnd::OnMButtonUp | CWnd::OnMButtonDown

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