TWUCompareVersions

The TWUCompareVersions function compares two version numbers.

int TWUCompareVersions(
    DWORD dwVersionLow1,
    DWORD dwVersionHigh1,
    DWORD dwVersionLow2,
    DWORD dwVersionHigh2
);

Delphi version:

function TWUCompareVersions(
    dwVersionLow1: DWORD;
    dwVersionHigh1: DWORD;
    dwVersionLow2: DWORD;
    dwVersionHigh2: DWORD
): Integer;

Parameters

dwVersionLow1

[Input] Low-order DWORD of the first version to compare.

dwVersionHigh1

[Input] High-order DWORD of the first version to compare.

dwVersionLow2

[Input] Low-order DWORD of the second version to compare.

dwVersionHigh2

[Input] High-order DWORD of the second version to compare.

Return value

Returns <0 if the first version is older than the second version; 0 if equal; >0 if the first version is newer than the second version.