On 64-bit operating systems, Windows Installer may call custom actions that have been compiled for 32-bit or 64-bit systems.
A 64-bit custom action based on Scripts must be explicitly marked as a 64-bit custom action by adding the msidbCustomActionType64BitScript bit to the custom actions numeric type in the Type column of the CustomAction table.
| Constant | Hexadecimal | Decimal | Meaning |
|---|---|---|---|
| msidbCustomActionType64BitScript | 0x0001000 | 4096 | This is a 64-bit custom action written in Scripts. |
Custom actions based on Executable files or Dynamic-Link Libraries that have been complied for a 64-bit operating systems do not require including this additional bit in the Type column of the CustomAction table.
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Build date: 8/13/2009
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