Including the Visual C++ Runtime merge module in your installer will result in the following ICE warnings: light.exe(0,0): warning LGHT1076: ICE03: String overflow (greater than length permitted in column) Table: Component, Column: KeyPath, Key(s): downlevel_manifest.7.762.98CB24AD_52FB_DB5F_FF1F_C8B3B9A1E18E
The MergeRef refers to the merge module by its unique id. In the example above a feature specific to the runtime is created and marked as hidden to prevent it from displaying in any UI your installer may use. The MergeRef element is used within a Feature element to actually install the merge module. The Language attribute should always be 0. The DiskId attribute should match the DiskId specified in your project's Media element. The SourceFile attribute points to the location of the merge module on your machine. A unique id is assigned using the Id attribute. The Merge element ensures the merge module is included in the final Windows Installer package. The following example illustrates how these elements are used. To include the merge module in your installer use the and elements. Step 2: Include the merge module in your installer There is generally no need to include the policy MSMs as part of the installation. The Visual Studio 9.0 runtime file is Microsoft_VC90_CRT_x86.msm. This same MSM is used for the Visual C++ 8.0 SP1 runtime, however it is updated in place by the Visual Studio 2005 SP1 installer. The Visual C++ 8.0 runtime file is Microsoft_VC80_CRT_x86.msm. The Visual C++ runtime merge modules are installed with Visual Studio and are located in \Program Files\Common Files\Merge Modules.
Step 1: Obtain the correct Visual C++ runtime merge modules This how to describes including the Visual C++ runtime merge modules into your installer and explains the expected ICE warnings you will see. If your application depends on the Visual C++ runtimes you can include them as part of your installer to simplify the installation experience for your end users. How To: Install the Visual C++ Redistributable with your installer
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