Dave: Created page with "

 #if OPT_WINOS && defined(kDEBUG) static HWND			s_prevChainH = NULL; wchar_t				s_invisibleWindClass[] = L"invisible";  namespace yaaf { 	extern HINSTANCE	_GInstance;				..."

2014-02-24T20:06:05Z

Created page with "<pre> #if OPT_WINOS && defined(kDEBUG) static HWND s_prevChainH = NULL; wchar_t s_invisibleWindClass[] = L"invisible"; namespace yaaf { extern HINSTANCE _GInstance; ..."

New page

<pre>
#if OPT_WINOS && defined(kDEBUG)
static HWND s_prevChainH = NULL;
wchar_t s_invisibleWindClass[] = L"invisible";

namespace yaaf {
extern HINSTANCE _GInstance; // instance pointer
};

static LRESULT CALLBACK InvisibleWindowProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
{
return ::DefWindowProc(w,msg,wp,lp);
}

static void RegisterInvisibleWindow()
{
WNDCLASSW wc;

wc.style = 0;
wc.lpfnWndProc = InvisibleWindowProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = yaaf::_GInstance;
wc.hIcon = NULL;
wc.hCursor = NULL;
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wc.lpszMenuName = NULL;
wc.lpszClassName = s_invisibleWindClass;

ATOM resultI = RegisterClassW(&wc);

CF_ASSERT(resultI);
}

static HWND CreateInvisibleWindow()
{
RegisterInvisibleWindow();

HWND wndH = ::CreateWindowExW(
WS_EX_DLGMODALFRAME,
s_invisibleWindClass,
_T("temp"),
WS_POPUP,
0, 0,
1, 1,
NULL,
NULL,
yaaf::_GInstance,
NULL);

if (wndH == NULL) {
HRESULT lastErr = GetLastError();

CF_ASSERT(0);
}

return wndH;
}

BOOL CALLBACK EnumWindowsProc(HWND hWnd, LPARAM lParam)
{
WCharVec classCharVec(256);

if (::GetClassName(hWnd, &classCharVec[0], classCharVec.size())) {
SStringSet& stringSet(*reinterpret_cast<SStringSet *>(lParam));
SuperString classStr(classCharVec);

stringSet.insert(classStr);
}

return TRUE;
}

#define kLogClassNames 0

SuperString Get_QTIdle_ClassName()
{
SuperString className;
SStringSet classSet;

::EnumWindows(
EnumWindowsProc,
reinterpret_cast<LPARAM>(&classSet));

#if kLogClassNames
::OutputDebugString(SuperString("Classes BEGIN ------------").w_str());
#endif

BOOST_FOREACH(SuperString& str, classSet) {
if (str.StartsWith("QTIdle")) {
className = str;
break;
}
#if kLogClassNames
str.append('\r');
::OutputDebugString(str.w_str());
#endif
}

#if kLogClassNames
::OutputDebugString(SuperString("Classes END --------------").w_str());
#endif

return className;
}

#endif

void QuickTime_SavePreviousCliboardChain()
{
#if OPT_WINOS && defined(kDEBUG)
HWND wndH = CreateInvisibleWindow();

if (wndH) {
s_prevChainH = ::SetClipboardViewer(wndH);

CF_ASSERT(s_prevChainH);
CF_ASSERT(ChangeClipboardChain(wndH, s_prevChainH));
::DestroyWindow(wndH);
}
#endif
}

void QuickTime_RestorePreviousCliboardChain()
{
#if OPT_WINOS && defined(kDEBUG)
if (s_prevChainH) {
SuperString idleClassStr(Get_QTIdle_ClassName());

if (!idleClassStr.empty()) {
HWND qtIdleWindowH = ::FindWindow(idleClassStr.w_str(), NULL);

CF_ASSERT(qtIdleWindowH);

if (qtIdleWindowH) {
CF_ASSERT(ChangeClipboardChain(qtIdleWindowH, s_prevChainH));
}
}
}
#endif
}

void QuickTime_Unload()
{
TerminateQTML();
}

bool QuickTime_Load(OSErr *errP0)
{
static bool s_availB = true;

#if OPT_WINOS
static OSErr s_qtErr = noErr;
static bool s_askedB = false;

if (!s_askedB) {
QuickTime_SavePreviousCliboardChain();

if (QTLoadLibrary("QTCF.dll") == NULL) {
s_qtErr = qtmlDllLoadErr;
} else {
s_qtErr = InitializeQTML(0);
}

QuickTime_RestorePreviousCliboardChain();

s_askedB = true;
if (s_qtErr) {
LogErr("$$$ Loading Quicktime Failed", s_qtErr);
s_availB = false;
}
}

if (errP0) {
*errP0 = s_qtErr;
}
#endif

return s_availB;
}
</pre>

Blog/Parallels/Solution - Revision history

Dave: Created page with "
#if OPT_WINOS && defined(kDEBUG) static HWND s_prevChainH = NULL; wchar_t s_invisibleWindClass[] = L"invisible"; namespace yaaf { extern HINSTANCE _GInstance; ..."