MouseEventArgs.Button Property
Definition
Important
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The button number that was pressed when the mouse event was fired: Left button=0, middle button=1 (if present), right button=2. For mice configured for left handed use in which the button actions are reversed the values are instead read from right to left.
public:
property long Button { long get(); void set(long value); };public long Button { get; set; }member this.Button : int64 with get, setPublic Property Button As Long