Dinstall is an example of how to use DirectXSetup interfaces to install the DirectX subsystem and DirectX drivers. It shows how to use a callback function to present messages and get user input through a custom interface, in this case a simple modeless dialog box.
Source: (SDK root)\Samples\Multimedia\Dxmisc\Src\Setup
Executable: (SDK root)\Samples\Multimedia\Dxmisc\Bin
First copy the entire contents of the Redist\DirectX6 folder from the DirectX SDK CD into the same folder as Dinstall.exe. In your development environment, set the working directory to this folder as well. (In Microsoft® Visual C++®, this setting is on the Debug page of the Project Settings dialog box.)
Run the program and select Start Install from the File menu. DirectSetup performs a simulated installation of DirectX (see Programming Notes) and advises you of its progress in a modeless dialog box. The Options menu allows you to change the level of messages shown. However, if you are performing only a simulated installation, you will never see problem or update messages.
Choose Get Version from the File menu. The program shows the version and revision number of DirectX currently installed on the system.
The driver folders in \Redist\DirectX6\Directx\Drivers contain localized versions of Microsoft-provided DirectX drivers. You can delete any number of these folders from your working directory if you want to save disk space.
By default, the program passes DSETUP_TESTINSTALL to the DirectXSetup function. This means that no files are actually copied, nor is the registry modified. To perform a real installation, delete this flag from the call.
Dinstall employs a callback function to monitor the progress of installation and intercept messages. Depending on the user's preferred warning level, as tracked in g_fStatus, messages may be ignored or presented to the user in a modeless dialog box. If user input is required, the appropriate buttons are displayed and the GetReply function monitors the message queue until one of the buttons is pressed.