MUI_Poppen

Poppen.mui

Super class

Pendisplay.mui

Background

Poppen class adds input capabilities to its super class Pendisplay. It should be used if your application allows users to configure some custom pens for rendering.

A Poppen object will appear as kind of a button which displays the currently selected color. When the user hits the button, a Popup window containing a Penadjust object opens up and lets the user choose change the color.

You can control the window title of the popup window using the MUIA_Window_Title on the Poppen object. It will remember its value and use it when creating the popup window.

As most MUI popups, the Penadjust popup window runs asynchronously and stays there until the user terminates it with "OK" or "Cancel". Furthermore, if the popup window is automatically cancelled if the pop button receives a MUIM_Cleanup method.

Anyway, you don't have to care about the internals of this class. Just create it like

obj = MUI_NewObject(MUIC_Poppen,
  MUIA_CycleChain , 1,
  MUIA_Window_Title, "Color of Followed Links",
  TAG_DONE);

somewhere in your prefs window and everything will be fine. You can get/set the current color from a Poppen object by using the MUIA_Pendisplay_Spec attribute. The resulting struct MUI_SpenSpec may then be saved somewhere in your preferences and used as parameter for MUI_ObtainPen() and MUI_ReleasePen().

You can find some example code on using this class in the Class2 demo of the MUI distribution.

Copyright © 1992-2006 by Stefan Stuntz Copyright © 2006-2021 by Thore Böckelmann, Jens Maus

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Updated: 11-Oct-2021