BIS fnc initDisplay: Difference between revisions

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m (Text replacement - "{{Inline code|" to "{{ic|")
(moved explanation to tutorial page)
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|gr1 = GUI
|gr1 = GUI


| A function related to displays that is called on the following occasions:
| This function is a central part of how BI handles UIs. For a full explanation see [[GUI_Tutorial#BIS_fnc_initDisplay|this page]].
* Game start
* Display opened
* Display closed
 
{{Feature|important|This information is only useful for GUIs in an addon, not for mission level GUIs!}}
 
The usual config of a display that uses this function looks like this:
<syntaxhighlight lang=cpp>
class RscDisplayAAR
{
scriptName = "RscDisplayAAR";
scriptPath = "GUI";
onLoad = "[""onLoad"",_this,""RscDisplayAAR"",'GUI'] call (uinamespace getvariable 'BIS_fnc_initDisplay')";
onUnload = "[""onUnload"",_this,""RscDisplayAAR"",'GUI'] call (uinamespace getvariable 'BIS_fnc_initDisplay')";
idd = 2121;
//...
</syntaxhighlight>
A macro for easier use is available:
<syntaxhighlight lang=cpp>
#include "\a3\ui_f\hpp\defineCommon.inc"
class RscDisplayAAR
{
INIT_DISPLAY(RscDisplayAAR,GUI)
idd = 2121;
//...
</syntaxhighlight>
translates to the same partial class as above.<br>
<br>
On game start:<br>
The function searches for "scriptName" and "scriptPath" entries in the subclasses of the following configs:
* [[configFile]]
* configFile >> "RscTitles"
* configFile >> "RscInGameUI"
* configFile >> "Cfg3DEN" >> "Attributes"
If both of these attributes are defined (and the attribute "scriptIsInternal" is not defined or 0) then the display function is compiled into the [[uiNamespace]] in the following way: The "scriptPath" attribute points to a config attribute in {{ic|configFile >> "CfgScriptPaths"}} which in turn points to a folder in which the {{ic|scriptName.sqf}} resides, for example "\a3\ui_f\scripts\GUI\RscDisplayAAR.sqf". The function name of this display's uiNamespace function is therefore {{ic|RscDisplayAAR_script}}.
<br><br>
When the display is opened or closed:<br>
The [[User_Interface_Event_Handlers|User Interface Eventhandlers]] for the onLoad or onUnload event are triggered. The following then happens:<br>
onLoad:
* Display is registred:
** The config class of the display (eg. RscDisplayAAR) is saved as "BIS_fnc_initDisplay_configClass" to the display
** A list of open UIs ({{ic|uiNamespace getVariable ["PATH_displays", []]}}) is updated with the display, where PATH is the afformentioned scriptPath, eg GUI_displays
* The display's script (eg. RscDisplayAAR_script) is executed in uiNamespace
 
onUnload:
* The display is removed from the list of open displays
* The display's script (eg. RscDisplayAAR_script) is executed in uiNamespace
 
In both events the following arguments are passed to the display's script:
<code>params ["_mode", "_params", "_class"];</code>
* 0: STRING - Either "onLoad" or "onUnload" for their respective events
* 1: ARRAY - The parameters of the UIEH
* 2: STRING - Config classname of the display


| parameters call [[BIS_fnc_initDisplay]]
| parameters call [[BIS_fnc_initDisplay]]

Revision as of 17:51, 30 March 2021

Game1 needed - Version1 needed
Hover & click on the images for description

Description

Description:
This article is a Stub. You can help BI Community Wiki by expanding it.
Description needed
Execution:
call
Groups:
GUI

Syntax

Syntax:
Syntax needed
Parameters:
parameters: Array
  • [ ] (empty array) - init displays during preStart
  • [mode, params, displayClass, scriptPath, register]
    • mode: String - mode, can be "onLoad" or "onUnload"
    • params: Array - params passed from onLoad or onUnload UI event handler
    • displayClass: String - Display class, usually to format "RscDisplayXXX"
    • scriptPath: String - script path from CfgScriptPaths
    • register: Number or Bool - Save variables associated with the display to the uiNamespace. Usually this is false when the function is called from a control.
 
Return Value:
Return value needed

Examples

Example 1:
["onLoad", _this, "RscDisplayAAR", "GUI", true] call (uiNamespace getVariable "BIS_fnc_initDisplay");

Additional Information

See also:
See also needed

Notes

Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note
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