Override click inside QuickLaunch results list

[zarkogajic]

Hi Support,

Is there a way to override what happens / catch / get notified when a click happens for the item in the QuickLaunch list:

image.png

Note: I do not want to custom handle the associated command - I want to know what command was selected/clicked (and stop it from being executed).

I guess that's some IUIX_List and I should be able to use IUIX_ListCallbacks and List_OnItemClick. But not sure from what IUIX_Obj to get to that list? And if I can, how to get the actual command from List_OnItemClick?

-žarko

[Daniel - PDF-XChange]

Hello, zarkogajic

I have passed this along for review by the Dev team, hopefully they can get back to us in a timely manner.

Kind regards,

[zarkogajic]

Hi Dan,

Ping here ...

-žarko

[Vasyl - PDF-XChange]

Hi Zarko.

You may try this way:

Code: Select all

const int id_cmd_quickLaunchList = PXV_Inst.Str2ID("cmd.quickLaunchList");

public void OnEventMonitor(PDFXEdit.IUIX_Obj pTarget, PDFXEdit.IUIX_Event pEvent)
{
	if (pEvent.Code == (int)WM_LBUTTONUP)
	{
		if (pTarget.ID == id_cmd_quickLaunchList)
		{
			IntPtr impl = IntPtr.Zero;
			pTarget.QueryImpl(typeof(IUIX_List).GUID, null, out impl);
			IUIX_List list = (IUIX_List)Marshal.GetObjectForIUnknown(impl);
			if (!IsMyCallback(list.Callbacks))
			{
				list.Callbacks = CreateMyCallback(list.Callbacks);  // it sets my implementation of IUIX_ListCallbacks interface that 
															// mostly redirects all calls to the original callbacks, 
															// BUT overrides the IUIX_ListCallbacks::List_OnItemClicked
			}
		}
	}
}

HTH

[zarkogajic]

Hi Vasyl,

Thanks.

Can I get what item/cmd was clicked with List_OnItemClicked ?

-žarko

[zarkogajic]

Hi Vasyl,

I've tried your code ...

WM_LBUTTONUP is too late as at that moment the item in the list is already clicked and the command gets executed and list hidden/destroyed - so List_OnItemClick does not happen.

I've changed that to use "(pEvent.Code = e_Visible) AND (pEvent.Param1 = 1)" - so inject my callback when the list is made visible. This works and upon clicking an item in the list the List_OnItemClick does happen.

But, as I feared - no real data I can use there to figure out what item (what command) was clicked (except the item position in the list (UIX_ListItemID.nItem). As I remember, for a similar request sometime in the past, the answer was "for internal use, not available to SDK"

So, new questions:

Q1. Is my approach with "(pEvent.Code = e_Visible) AND (pEvent.Param1 = 1)" the best I can use?

Q2. Is there any (never mind how crazy or complex) way to get to the actual item that was clicked - the command ID that was selected/clicked to be executed ? I know the item in that list might not be a command but some kind of "show sub-menu" ...

3. How come the selected command does get executed even if I do not call "Original Callbacks List_OnItemClick"?
I tried to return E_FAIL or E_ABORT from my List_OnItemClick but the selected command still gets executed.
If I return S_FALSE - nothing happens (command does not get executed, list remains visible) - so I guess there is some return code I can use to stop the command from being executed (but list made hidden as if it was executed).

Edit: Ok, if I set "result = s_false" and also do "pList.Obj.Show(0, false)" - selected command does not get executed and the list gets hidden - good enough for me.

So, only Q1 and Q2 open ...

-žarko