Shoutbox

I seem to have a problem detecting mouse movement through WM_MOUSEMOVE. Is there a problem with my script or this message?

The point is: I want to check whether the mouse is over a control or not. I suppose that can be done with this message?

Likely just a problem with your code. Post what you have and lets take a look.

quote:

---

Originally posted by matty
Likely just a problem with your code.

---

You're right about that. I have solved it, but now there's another problem: I cannot press any button in the window. In fact, the window behaves as if it were disabled. It gets enabled when the window is deactivated (i.e. minimised) and activated again. Can it be that this has something to do with the SetCapture function?

Figured a lot out: SetCapture causes a window to detect mouse movement, but disables most of its other input stuff. However, not using SetCapture means you cannot detect mouse movement. The disabled-like behaviour is caused by SetCapture. Minimising and restoring position releases capture from the window and allows you to click buttons, etc.

But I still need to detect mouse movement

Post no. 700

Don't use SetCapture for that, because it has some drawbacks and limitations as you have experienced.

SetCapture is meant to be used when you do an action with your mouse. Thus when you already have detected mouse movement over a control. Eg: you invoke it when you press (and hold) a mouse button inside a drawing control to draw lines. It is not meant to track mouse movement to see if you hoover over a control. For that you need _TrackMouseEvent.

http://www.mvps.org/user32/setcapture.html
http://msdn.microsoft.com/en-us/library/ms646266(v=VS.85).aspx
http://msdn.microsoft.com/en-us/library/ms645602(...px#tracking_cursor

quote:

---

Originally posted by MSDN page about _TrackMouseEvent
dwFlags
    DWORD

    Specifies the services requested. This member can be a combination of the following values.

[DWORD values]

---

There is nothing like TME_ENTER that is fired when the mouse leaves a control. Or do I need to use TME_HOVER for that...?

Surprise, surprise: been messing around a little, and don't get it

Problem could be that I've worked from 5 to 8 after school

quote:

---

Originally posted by SmokingCookie

quote:

---

Originally posted by MSDN page about _TrackMouseEvent
dwFlags
    DWORD

    Specifies the services requested. This member can be a combination of the following values.

[DWORD values]

---

There is nothing like TME_ENTER that is fired when the mouse leaves a control. Or do I need to use TME_HOVER for that...?

---

To detect the mouse leaving the area you're tracking you need to specify TME_LEAVE.

quote:

---

Originally posted by SmokingCookie
Surprise, surprise: been messing around a little, and don't get it

Problem could be that I've worked from 5 to 8 after school

---

get some sleep first, then read those links I gave

Well, I'll never do ANY kind of programming/scripting after a full day of school and work, before going to bed. I've been busy with this all night long

But that's had positive consequences too. I've thought of the following theory: upon a call to _TrackMouseEvent, <some message>* will be posted to the window when the mouse moves over it. When the mouse leaves the window, some other message is posted.

* Can this be WM_MOUSEMOVE?

We used WM_MOUSEMOVE in Screenshot Sender.

http://beta.screenshotsender.com/code/WindowHandl...ectArea_handler.js

Tried something like this?

js code:

---

/* Create your window*/
pPlusWnd.RegisterMessageNotification(0x02A1 /* WM_MOUSEHOVER */)
var TRACKMOUSEEVENT = Interop.Allocate(16);
    TRACKMOUSEEVENT.WriteDWORD(0, 16);
    TRACKMOUSEEVENT.WriteDWORD(4, 0x1 /* TME_HOVER */);
    TRACKMOUSEEVENT.WriteDWORD(8, pPlusWnd.GetControlHandle('myControl'));
    TRACKMOUSEEVENT.WriteDWORD(12, 1);

function OnWindowSubClassEvent_MessageNotification(pPlusWnd, nMessage, wParam, lParam) {
    switch (nMessage) {
        case 0x02A1 /* WM_MOUSEHOVER */:
            Debug.Trace('i r on your control');
    }
}

---

JScript code:

---

// Windows.js;

objPlusWnd.RegisterMessageNotification(WM_MOUSEHOVER,true);
var TRACKMOUSEEVENT = Interop.Allocate(16);
with(TRACKMOUSEEVENT) {
    writeDWORD(0,Size);
    writeDWORD(4,TME_HOVER);
    writeDWORD(8,objPlusWnd.GetControlHandle("BtnViewPage"));
    writeDWORD(12,1);
}
Interop.Call("Comctl32.dll","_TrackMouseEvent",TRACKMOUSEEVENT.DataPtr);
//Interop.Call("User32.dll","TrackMouseEvent",TRACKMOUSEEVENT.DataPtr);
TRACKMOUSEEVENT.Size = 0;

// WndSettings_Notif.js;

function OnWndSettings_NotifEvent_MessageNotification(PlusWnd,Message,wParam,lParam) {
    if(Hotkey_HandleEvent(PlusWnd,Message,wParam,lParam)) return -1;
    switch(Message) {
        case WM_MOUSEHOVER:
            Print("i r on ur control");
        return 0;
    }
}

---

But it ain't exactly working...

What is the return value of the TrackMouseEvent call?

What about tracking WM_MOUSEMOVE and use GetCursorPos then use ChildWindowFromPoint comparing the hWnd of the control to that returned from the function?