By default installation and deinstallation of CallbackProcess kernel-mode driver can be performed from the user account which belongs to Administrators group. This is a security measure of Windows operating system. You can change this behaviour on the target system by adjusting the list of users and groups who have the right to install and uninstall the drivers. This can be done in Control Panel -> Administrative tools -> Local Security Settings -> Local Policies \ User Rights Assignment (tree branch), there you need to change "Load and Unload device drivers" item. No need to say that by default you can change the security settings if you are system administrator.
Notes for Vista and later versions of Windows
If you have UAC (User Account Control) enabled, Vista and later versions of Windows will run applications started by you with limited rights even when you are logged in as administrator or m7ember of Administrators group.
If you install or uninstall the drivers by calling the above mentioned functions in your code, you need to elevate privileges of your application so that it's started with truly administrative rights.
To elevate privilages for your application, you must start it with Run As Administrator option. In Windows Explorer this is done using Run As Administrator command in context menu for the application. Alternatively you can set the corresponding option in the Properties window shown for your executable module.
One more option is to use the manifest.
The manifest file can be placed next to the executable of your application or embedded into the executable.
If you decide to keep the manifest in a separate file, it must be named <EXEName_with_extension>.manifest, eg.
for MyApp.exe the manifest should be called MyApp.exe.manifest.
You can use the following manifest:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
<description>elevate execution level</description>
<requestedExecutionLevel level="requireAdministrator" uiAccess="false"/>
Installation of the drivers and Helper DLLs
In CallbackProcess all driver versions are packed to a single CAB file, which is installed to the target system using the functions exported by Installer DLL that is included within CallbackProcess package. This DLL can be freely distributed with your projects as long as it is used with the licensed version of CallbackProcess.
Note, that Uninstall function should be used only to completely uninstall the driver and helper DLLs. Don't use Uninstall function if you are updating the version of CallbackProcess on target systems. If you use Uninstall, and then attempt to install the updated version without restarting the system, you can either get an error or restart will cause the OS to delete the newly installed files (the OS treats these files as the ones that must be uninstalled). This remark is not applicable when you upgrade CallbackProcess from lower major version (2 or 3) to higher version (3 or 4 accordingly): higher major versions are treated as different products and they don't update lower versions.
After you install the CAB file, you need to keep a copy of this file on the destination system, because deinstallation of the files also requires the CAB archive to be present.
- C++ API:
C++ class links CallbackProcess API statically so no special API deployment is required.
- VCL API:
VCL unit for Delphi and C++Builder links CallbackProcess API statically so no special API deployment is required.
- .NET API:
When deploying the project, copy the CBProcNet.dll below to your application folder. Questions about when and how to install the assemblies to Global Assembly Cache are discussed in Working with Assemblies and the Global Assembly Cache and How to: Install an Assembly into the Global Assembly Cache articles.
.NET assemblies are different for Intel 32-bit and Intel 64-bit platforms.
64-bit .NET 4.6 assemblies are available for x64 processor architecture used by most modern 64-bit processors.
64-bit .NET 4.5.1 assemblies are available for x64 processor architecture used by most modern 64-bit processors.
64-bit .NET 4.5 assemblies are available for x64 processor architecture used by most modern 64-bit processors.
64-bit .NET 4.0 assemblies are available for x64 (AMD64) processor architecture used by most modern 64-bit processors and IA64 (Itanium) processor architecture used by some Intel-produced server processors.
64-bit .NET 2.0 assemblies are available for x64 (AMD64) processor architecture used by most modern 64-bit processors and IA64 (Itanium) processor architecture used by some Intel-produced server processors.
MSVC++ Runtime DLLs
All .NET assemblies require Visual C++ Multithreaded Runtime DLLs. It's a good idea to include these DLLs into the distribution.
If you place the assembly to the same folder where your application is located, MSVC++ Runtime DLLs should be placed in this folder too.
If you install the .NET assembly to the GAC, MSVC Runtime DLLs should be deployed using the installable "vcredist" package instead. The package can be downloaded from Microsoft site and included to your installation package. Do the search for "Microsoft Visual C++ Redistributable Package" on Microsoft site and choose the needed redistributable packages. "Vcredist" installations don't just copy VC redistributable DLLs to proper Windows folders, but also register them for side-by-side use in registry to avoid conflicts with files of the same name but different version.
.NET 4.6 assemblies require vcruntime140.dll. The DLLs are located in <CBProc>\MSVC_REDIST\NET_46 folder.
NET 4.5.1 assemblies require msvcp120.dll and msvcr120.dll. The DLLs are located in <CBProc>\MSVC_REDIST\NET_451 folder.
.NET 4.5 assemblies require msvcp110.dll and msvcr110.dll. The DLLs are located in <CBProc>\MSVC_REDIST\NET_45 folder.
.NET 4.0 assemblies require msvcp100.dll and msvcr100.dll. The DLLs are located in <CBProc>\MSVC_REDIST\NET_40 folder.
.NET 2.0 assemblies require msvcp90.dll and msvcr90.dll. The DLLs are located in <CBProc>\MSVC_REDIST\NET_20 folder.