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windows: add (*DLL).FindProcByOrdinal

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Change-Id: I0b0ef2c62994fad4d89bf15c8c6c95fa660190c3
GitHub-Last-Rev: 379ab4a0f5a6ce8ee4b9eb234312a56e5cd07b72
GitHub-Pull-Request: golang/sys#69
Reviewed-on: https://go-review.googlesource.com/c/sys/+/227439
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
This commit is contained in:
ly303550688
2020-05-09 04:47:56 +00:00
committed by Alex Brainman
parent 3aab700007
commit 6aff5f38e5
2 changed files with 50 additions and 0 deletions
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windows/syscall_test.go
+21
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@@ -79,3 +79,24 @@ func TestGetWindowsDirectory(t *testing.T) {
t.Fatalf("System Windows directory does not end in windows: %s", d2)
}
}
func TestFindProcByOrdinal(t *testing.T) {
// Attempt calling shlwapi.dll:IsOS, resolving it by ordinal, as
// suggested in
// https://msdn.microsoft.com/en-us/library/windows/desktop/bb773795.aspx
dll, err := windows.LoadDLL("shlwapi.dll")
if err != nil {
t.Fatalf("Failed to load shlwapi.dll: %s", err)
}
procIsOS, err := dll.FindProcByOrdinal(437)
if err != nil {
t.Fatalf("Could not find shlwapi.dll:IsOS by ordinal: %s", err)
}
if procIsOS.Name != "#437" {
t.Fatalf("Proc's name is incorrect: %s,expected #437", procIsOS.Name)
}
const OS_NT = 1
r, _, _ := syscall.Syscall(procIsOS.Addr(), 1, OS_NT, 0, 0)
if r == 0 {
t.Error("shlwapi.dll:IsOS(OS_NT) returned 0, expected non-zero value")
}
}