CPL++ v1.1 - Control Panel Applets

4.09/5 (6 votes)

Mar 4, 2000

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A freeware MFC class framework for developing Control Panel Applets.

Introduction

Welcome to CPL++ v1.1, An MFC class framework to encapsulate developing Control Panel Applets.

V1.0 (18 July 1999)

V1.1 (20 November 1999)

Now fully supports CPL_INQUIRE as well as CPL_NEWINQUIRE messages.
Now supports a document template approach to creating applets. This means that you can easily support multiple applets per dll using the CPL++ framework.
Demo program now supports demo'ing both static and dynamic applets.
Control panel applet now always output as a ".cpl" file instead of a ".dll" file.
Now supports displaying the specified property page (via the CPL_STARTWPARMS message) when a control panel applet is called via the rundll32 command line.

To use CPL++ in your applets all you need to do is:

Ensure your DLL has a DEF file and exports the sole function CPlApplet. Note: You do not need to write this function as it is provided internally by the CPL++ code.
Include cpl_pp.h and cpl_pp.h in your project (configured to produce a standard DLL including MFC either dynamically or statically).
Derive a class from CControlPanelApp and override its OnInit() function. In it call AddApplet() to add each applet you want. Normally, you would do this just once, but for demonstration purposes, the sample creates two applets.
Each applet you add should be an instance of the class CControlPanelApplet. It should be created on the heap. See CApp::OnInit() for an example. Depending on which constructor you call, you will have created an dynamic (responds to CPL_NEWINQUIRE) or static (responds to CPL_INQUIRE) control panel applet.
The code is UNICODE enabled and UNICODE build configurations are provided for the test applet.
For further information on developing and debugging control panel applets, please refer to the MSDN.

PJ Naughter
Email: pjn@indigo..ie
Web: http://www.naughter.com
20 November 1999