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The WM_RBUTTONDBLCLK message is posted when the user double-clicks the right mouse button while the cursor is in the client area of a window. If the mouse is not captured, the message is posted to the window beneath the cursor. Otherwise, the message is posted to the window that has captured the mouse.


fwKeys = wParam;        // key flags 

xPos = LOWORD(lParam);  // horizontal position of cursor 

yPos = HIWORD(lParam);  // vertical position of cursor 



Value of wParam. Indicates whether various virtual keys are down. This parameter can be any combination of the following values:




Set if the CTRL key is down.


Set if the left mouse button is down.


Set if the middle mouse button is down.


Set if the right mouse button is down.


Set if the SHIFT key is down.

Value of the low-order word of lParam. Specifies the x-coordinate of the cursor. The coordinate is relative to the upper left corner of the client area.
Value of the high-order word of lParam. Specifies the y-coordinate of the cursor. The coordinate is relative to the upper left corner of the client area.

Return Values

If an application processes this message, it should return zero.


Only windows that have the CS_DBLCLKS style can receive WM_RBUTTONDBLCLK messages, which Windows generates whenever the user presses, releases, and again presses the right mouse button within the systemís double-click time limit. Double-clicking the right mouse button actually generates four messages: WM_RBUTTONDOWN, WM_RBUTTONUP, WM_RBUTTONDBLCLK, and WM_RBUTTONUP again.

An application can use the MAKEPOINTS macro to convert the lParam parameter to a POINTS structure.

See Also

GetCapture, GetDoubleClickTime, MAKEPOINTS, POINTS, SetCapture, SetDoubleClickTime, WM_RBUTTONDOWN, WM_RBUTTONUP

file: /Techref/os/win/api/win32/mess/src/msg27_16.htm, 3KB, , updated: 2000/4/7 12:20, local time: 2024/7/19 23:31,

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