Thursday, November 15, 2007

RichEdit common contrl

i'll keep this post update with all the things about Rich Edit.

#1 The RichEdit Version

The current versions of RichEdit control and their modules are:

ver 1.0 contained in Riched32.dll
ver 2.0 contained in Riched20.dll
ver 3.0 contained in Riched20.dll
ver 4.1 contained in Msftedit.dll

The Rich Edit 3.0 (Riched20.dll) is included in releases of Microsoft Windows 2000 and above.

#2 Initialization
You need to explicitly load the RichEdit library in your application in order to use the control. Hence, to use the 3.0 version call:

if(NULL == LoadLibrary("RichEd20.dll"))
// cannot load RichEdit v3.0

Open and select a file in windows explorer

Many applications can open an windows explorer window an select a file. This is done by running explorer.exe with some command line switches.

There is a KB with the documented windows explorer switches:

The KB says that the supported versions include old OSes like Windows 95 but I think that 'select' switch for example works only for Windows XP and above.

Here is another KB for XP Windows Explorer.

A solution for older Windows OSes is to use Shell API i think.
I have not tried this but one solution would be to:
call CreateProcess( "explorer.exe" )
enumarate from ROT the windows explorer instances
connect to a instance and use the Shell API to navigate to the file.