OnNuiEvent

Note: This article documents Neverwinter Nights: Enhanced Edition new content or changes/updates/fixes to 1.69 functions. These are all listed under the category and patches pages.

The script attached to this event fires when the player clicks on a NUI widget (that has an NuiId. It must be set using SetEventScript (for instance in OnModuleLoad).

Trigger

When a NUI widget is interacted with.

Setup

Note: A script for the OnNuiEvent event cannot be specified in module properties. There is no default script for this event, so no action will be taken unless a script is assigned to this event. To assign a script to this event, use this code:

SetEventScript(GetModule(), EVENT_SCRIPT_MODULE_ON_NUI_EVENT, "nui_events");

Remarks

This new EE NUI allows custom GUI displays and this allows module to process any interactions with those GUIs.

Known Bugs

This is NOT a bug, but a common mistake is not assigning an NuiId to a Widgets. Events will not fire for a widget if it doesn't have a NuiId.

Version

NUI was added in 1.85.8193.31 of NWN:EE

Example

This sets up a global NUI event handler which then passes off to other functions. Something like this would be useful if you have more than one NUI in your module.

#include "nw_inc_nui"
void main() {
       
        object oPlayer   = NuiGetEventPlayer();
        int nToken       = NuiGetEventWindow();
        string sEvent    = NuiGetEventType();
        string sElement  = NuiGetEventElement();
        int nIndex       = NuiGetEventArrayIndex();
        string sWindowId = NuiGetWindowId(oPlayer, nToken);

        // Debug information for when first setting up.
        SendMessageToPC(GetFirstPC(), "Receive an OnNuiEvent.  Player: " + GetName(oPlayer) + " nToken: " + IntToString(nToken) + " sEvent: " + sEvent + " sElement: " + sElement + " nIndex: " + IntToString(nIndex) + " sWindowId: " + sWindowId);

        // If this is my window ID, let my function handle it.
        if (sWindowId == "MyNuiWindowId")
        {
                MyNuiWindow_EventHandler(oPlayer, nToken, sEvent, sElement, nIndex, sWindowId);
                return;
        }

        // Or an alternative way to say the same thing.  If it's handled, it will return TRUE.
        // But this function must be well behaved and return TRUE if it's meant to be handled there.
        if (MyOTHERNuiWindow_EventHandler(oPlayer, nToken, sEvent, sElement, nIndex, sWindowId))
        {
                return;
        }

        // Or events can be handled here directly.
        // This will print "Test!" if a button is clicked on Button ID "mynuitestwindow_button_test" that belongs to the "MyNuiTestWindow" window.
        if (sEvent == "mouseup" && sWindowId == "MyNuiTestWindow" && sElement == "mynuitestwindow_button_test")
        {
                SendMessageToPC(GetFirstPC(), "Test!");
                return;
        }

        // Or lastly, you could run a script on an event.  This is sometimes useful for 3rd party NUIs that expect to the be main and only OnNuiEvent handler.
        if (sWindowId == "MyNuiWindowId_Number4") {
                ExecuteScript("num4_evthdler");
                return;
        }


        // This only displays if we get an event that wasn't handled above.
        SendMessageToPC(GetFirstPC(), "WARNING: Receive an OnNuiEvent, but nothing handled (claimed) it.  Please check.  Player: " + GetName(oPlayer) + " nToken: " + IntToString(nToken) + " sEvent: " + sEvent + " sElement: " + sElement + " nIndex: " + IntToString(nIndex) + " sWindowId: " + sWindowId);
}

See Also

functions:

NUI