Mouse Messages

[Wak]

If I have a whole bunch of child window controls and I'm getting there messages via WM_COMMAND, how can I get their mouse messages?? I need to be able to tell when the mouse is moving over them I passed ?S_NOTIFY if that makes any difference.

[abdul]

You recieve a WM_MOUSEMOVE message when a mouse is moving on the window where your controls are placed.

WM_MOUSEMOVE
The WM_MOUSEMOVE message is posted to a window when the cursor moves. If the mouse is not captured, the message is posted to the window that contains the cursor. Otherwise, the message is posted to the window that has captured the mouse.

A window receives this message through its WindowProc function.

LRESULT CALLBACK WindowProc(
HWND hwnd, // handle to window
UINT uMsg, // WM_MOUSEMOVE
WPARAM wParam, // key indicators
LPARAM lParam // horizontal and vertical position
);
Parameters
wParam
Indicates whether various virtual keys are down. This parameter can be one or more of the following values. Value Description
MK_CONTROL The CTRL key is down.
MK_LBUTTON The left mouse button is down.
MK_MBUTTON The middle mouse button is down.
MK_RBUTTON The right mouse button is down.
MK_SHIFT The SHIFT key is down.
MK_XBUTTON1 Windows 2000/XP: The first X button is down.
MK_XBUTTON2 Windows 2000/XP: The second X button is down.


lParam
The low-order word specifies the x-coordinate of the cursor. The coordinate is relative to the upper-left corner of the client area.
The high-order word 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
Use the following code to obtain the horizontal and vertical position:

xPos = GET_X_LPARAM(lParam);
yPos = GET_Y_LPARAM(lParam);
You can also use the MAKEPOINTS macro to convert the lParam parameter to a POINTS structure.

So you can use the X and Y values of the cursor and check against the rectangular area of the control you want to know about to see if the mouse is moving on that control or not.

[jim mcnamara]

Do you know about the system-wide mousehook WH_MOUSE?

[Wak]

no, can you please tell me how I use it, cause I'm sure I can tell whether the mouse is over a child window, without using the x and y coordinates, there be some sort of event sent.

Does anyone know?