Shoutbox

Hi,

I'm just not able to find how to enable or disable buttons...
I've tried this, like someone suggested me (more or less) :

code:

---

var WM_ENABLE    = 0x000A;
myWindow.SendControlMessage('myButtonControl', WM_ENABLE, 0, 1);

---

What's wrong with that (finally, it does nothing...) ?
Do I send the good message (0x000A) ?
Do I correctly set the third and fourth parameters ?
What's the fourth parameter for ?

Thank you

Hi,

I also wondered about this.

At the moment I'm using the following code to enable a button:

code:

---

        var btnReplyWnd;
        btnReplyWnd = wndResp.GetControlHandle("BtnReply"); //get the buttons handle
        Interop.Call("User32","EnableWindow", btnReplyWnd, 1); //enable button

---

(change the 1 to 0 to disable)

Don't know if this is the correct way of doing it but it seems to work for me

Works for me too, thanks. :)

If someone knows an other way, tell.

WM_ENABLE is a notification: it's sent by the system after something has happened. It doesn't actually control anything. It also doesn't help you got the third and fourth parameters wrong. The third should be 0 for disabled, nonzero for enabled. The fourth is ignored, and should be 0.

fatfreechicken's code is actually a good workaround. To be honest, Patchou should have included an EnableControl() in the scripting engine: it's a common enough task.

Note: Different window messages have different WPARAM and LPARAM uses. Use MSDN to check for each message.

quote:

---

Originally posted by fatfreechicken
H
At the moment I'm using the following code to enable a button:

code:

---

        var btnReplyWnd;
        btnReplyWnd = wndResp.GetControlHandle("BtnReply"); //get the buttons handle
        Interop.Call("User32","EnableWindow", btnReplyWnd, 1); //enable button

---

(change the 1 to 0 to disable)

---

Yes, I use this method as well and it does work on all controls.

quote:

---

Originally posted by RaceProUK
Patchou should have included an EnableControl() in the scripting engine: it's a common enough task.

---

code:

---

function EnableControl(Control)
{
var ControlHandle = null;
ControlHandle = wndResp.GetControlHandle(Control);
Interop.Call("User32","EnableWindow", ControlHandle, 1);
}

function DisableControl(Control)
{
var ControlHandle = null;
ControlHandle = wndResp.GetControlHandle(Control);
Interop.Call("User32","EnableWindow", ControlHandle, 0);
}

---

Possibly there is a way to improve it by making ToggleEnableControl()

quote:

---

Originally posted by mathieumg
Possibly there is a way to improve it by making ToggleEnableControl()

---

You don't always want to 'toggle' the control. In most cases you want to set the enabled state (after some event or in a certain case).

Anways, you could use something like this:

code:

---

function ControlEnable(pPlusWnd, sControlId, bState) {
    // Get handle of the specified control on the specified window
    var hCtrl = pPlusWnd.GetControlHandle(sControlId);
    // If function is called with a 3rd parameter, set the state of the control
    if (arguments.length === 3) Interop.Call("User32", "EnableWindow", hCtrl, bState);
    // Return the current state of the control
    return Interop.Call("User32", "IsWindowEnabled", hCtrl);
}

---

Usage:

example 1: Disable control:
ControlEnable(mywindow, "mycontrol", 0);

example 2: Enable control:
ControlEnable(mywindow, "mycontrol", 1);

example 3: Get current state of control:
var TheState = ControlEnable(mywindow, "mycontrol");


---------

Or even (to add the toggle functionality):

code:

---

function ControlEnable(pPlusWnd, sControlId, bState) {
    // Get handle of the specified control on the specified window
    var hCtrl = pPlusWnd.GetControlHandle(sControlId);
    // If function is called with a 3rd parameter, set the state of the control
    if (arguments.length === 3) {
        // If bState doesn't equal 0 or 1, toggle the state of the control
        if (bState != 0 && bState != 1) bState = Interop.Call("User32", "IsWindowEnabled", hCtrl) ^ 1;
        Interop.Call("User32", "EnableWindow", hCtrl, bState);
    }
    // Return the current state of the control
    return Interop.Call("User32", "IsWindowEnabled", hCtrl);
}

---

Additional usage to the above examples:

example 4: Toggle control:
ControlEnable(mywindow, "mycontrol", 2);