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Detect VerifyVersionInfo() at runtime to allow running on

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pre-Win2k machines.
This commit is contained in:
lllucius 2011-04-04 22:54:51 +00:00
parent 04878ca5cc
commit 41befb8b05
1 changed files with 14 additions and 1 deletions
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15
lib-src/portmixer/src/px_win_common.c
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@ -74,6 +74,19 @@ static BOOL is_vista_or_later()
DWORDLONG dwlConditionMask = 0;
int op=VER_GREATER_EQUAL;
// The VerifyVersionInfo() function did not appear until Windows 2000,
// so check for it at runtime. However, post 2.0, this can be dropped
// since pre-Win2k support will be dropped.
typedef BOOL (WINAPI *verifyversioninfo)(LPOSVERSIONINFOEXA lpVersionInformation,
DWORD dwTypeMask,
DWORDLONG dwlConditionMask);
verifyversioninfo vvi =
(verifyversioninfo) GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")),
"VerifyVersionInfoA");
if (vvi == NULL) {
return FALSE;
}
// Initialize the OSVERSIONINFOEX structure.
ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
@ -90,7 +103,7 @@ static BOOL is_vista_or_later()
// Perform the test.
return VerifyVersionInfo(
return vvi(
&osvi,
VER_MAJORVERSION | VER_MINORVERSION,
dwlConditionMask);