WM_RBUTTONDBLCLK
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.
WM_RBUTTONDBLCLK
fwKeys = wParam; // key flags
xPos = LOWORD(lParam); // horizontal position of cursor
yPos = HIWORD(lParam); // vertical position of cursor
Parameters
fwKeys
Value of wParam.
Indicates whether various virtual keys are down. This parameter can be any
combination of the following values:
|
Value |
Description |
|
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. |
xPos
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.
yPos
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.
Remarks
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 system s 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