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Project: Version Information Component
Unit: PJVersionInfo
Class: TPJVersionInfo
Applies to: ~>3.0
property FileOS: DWORD;
FileOS is a run time property that provides information about the operating system for which the application was designed.
The value is as specified in the fixed file information part of the VERSIONINFO resource statement.
The same value can also be found by reading the dwFileOS member of the VS_FIXEDFILEINFO structure that is accessed using the FixedFileInfo property.
The value of FileOS is made up of a combination of values. We first specify the host operating system, which can be one of:
| Flag | Description |
|---|---|
VOS_NT |
Windows NT |
VOS_DOS |
MS-DOS |
VOS_OS232 |
32 bit OS2 |
VOS_OS216 |
16 bit OS2 |
VOS_UNKNOWN |
Any (or unspecified) host operating system |
We then specify a target operating system that is running on one of the targets above by combining (ORing) one of the above with one of the following values:
| Flag | Description |
|---|---|
VOS__WINDOWS32 |
32 bit Windows |
VOS__WINDOWS16 |
16 bit Windows |
VOS__PM32 |
Presentation Manager 32 |
VOS__PM16 |
Presentation Manager 16 |
VOS__BASE |
Any, unknown or unspecified target operating system |
Some predefined combinations of the above flags are available. They are:
| Flag | Description |
|---|---|
VOS_DOS_WINDOWS16 |
Windows 3.x running on MS-DOS |
VOS_DOS_WINDOWS32 |
32 bit Windows runing on MS-DOS |
VOS_OS216_PM16 |
Presentation Manager 16 running on 16 bit OS2 |
VOS_OS232_PM32 |
Presentation Manager 32 running on 32 bit OS2 |
VOS_NT_WINDOWS32 |
32 bit Windows running on Windows NT |
Symbolic constants for all the above flags are defined in the Windows unit.
Some of the flags are now obsolete - for example VOS__PM32 and _VOS_OS232 but may still exist in legacy programs.