[Bug 47490] New: GlobalLock different behavior
wine-bugs at winehq.org
wine-bugs at winehq.org
Tue Jul 9 07:00:05 CDT 2019
https://bugs.winehq.org/show_bug.cgi?id=47490
Bug ID: 47490
Summary: GlobalLock different behavior
Product: Wine
Version: 1.6.2
Hardware: x86
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: kernel32
Assignee: wine-bugs at winehq.org
Reporter: ghotik2002 at yahoo.com
Distribution: ---
Different behavior of GlobalLock in DxWnd GUI routine.
This is an extract of source code:
IStream *pStream = 0;
CreateStreamOnHGlobal(0, TRUE, &pStream);
LONG cbSize = 0;
hr = pPicture->SaveAsFile(pStream, TRUE, &cbSize);
if(FAILED(hr)) {
OutTrace("GrayIcon: SveAsFile error hr=%#x\n", hr);
return NULL;
}
HGLOBAL hBuf = 0;
hr = GetHGlobalFromStream(pStream, &hBuf);
if(FAILED(hr)) {
OutTrace("GrayIcon: GetHGlobalFromStream error hr=%#x\n", hr);
return NULL;
}
buf = (BYTE *)GlobalLock(hBuf);
if(buf == NULL) {
OutTrace("GrayIcon: GlobalLock error err=%d\n", GetLastError());
return NULL;
}
the stream holds an icon picture, everything is ok but the GlobalLock call:
- in Windows it returns a valid memory address
- in Wine/Linux it returns NULL errno 157 ERROR_DISCARDED - The segment is
already discarded and cannot be locked.
All this is in DxWnd program run on Wine/Linux environment.
P.s. my first bug report here - hope everything is more or less ok ... ;)
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