[Question] Enable/disable controls

[Question] Enable/disable controls - Printable Version

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[Question] Enable/disable controls by OcuS on 07-07-2006 at 09:58 PM

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

RE: [Question] Enable/disable controls by pollolibredegrasa on 07-07-2006 at 10:08 PM

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

RE: [Question] Enable/disable controls by OcuS on 07-07-2006 at 10:17 PM

Works for me too, thanks.

If someone knows an other way, tell.

RE: [Question] Enable/disable controls by RaceProUK on 07-07-2006 at 10:20 PM

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.

RE: [Question] Enable/disable controls by cooldude_i06 on 07-07-2006 at 10:29 PM

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.

RE: RE: [Question] Enable/disable controls by mathieumg on 07-08-2006 at 05:48 AM

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()

RE: RE: RE: [Question] Enable/disable controls by CookieRevised on 07-08-2006 at 03:03 PM

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);