String.CompareFileVersions Examples

number String.CompareFileVersions (

Example 1

compare_version = String.CompareFileVersions("1.0.20.3", "1.0.2.3");

Compares the file version string "1.0.20.3" to version "1.0.2.3" and stores the result in the variable "compare_version." Since "1.0.20.3" is greater than "1.0.2.3", the number 1 would be returned.

Example 2

IsBigger = String.CompareFileVersions("1.0.0.1", "1.0.0.1");

Compares the file version "1.0.0.1" to "1.0.0.1" and stores the result in the variable "IsBigger." Since the version strings are identical, the number 0 would be returned.

Example 3

-- Get the current OS Version information

tVersionInfo = System.GetOSVersionInfo();

-- Combine Version information into a file-version string

sCurrentWindowsVersion = tVersionInfo.MajorVersion .. "." .. tVersionInfo.MinorVersion.. "." .. tVersionInfo.BuildNumber;

-- Specify the minimum required file version

sRequiredWindowsVersion = "4.10.2222A";

-- Compare the current file version to the minimum requirement

nCompareResult = String.CompareFileVersions (sRequiredWindowsVersion, sCurrentWindowsVersion);

-- If the minimum requirement is greater than the current version, display an error and exit.

if (nCompareResult == 1) then

Dialog.Message("Error", "Windows 98 Second Edition or newer is required to use this software.", MB_OK, MB_ICONSTOP, MB_DEFBUTTON1);

Application.ExitScript();

end

Gets the Operating System's version information, and compares it to a minimum value. If the installed operating system is not Windows 98 Second Edition or newer (version 4.10.2222A or newer), an error message is displayed.