BOOL GRenderWinG::Init( BOOL FirstTime )
{
if (!FirstTime)
{
// only a screen mode change so don't redo DLL etc, just get new DC
if (WinGDLL)
{
// kill old one
if (OffScreenDC)
DeleteDC( OffScreenDC );
// go get new one
OffScreenDC = pWinGCreateDC();
if (OffScreenDC)
return TRUE;
}
return FALSE;
}
#if WIN32
// lets see if the DLL is there
// on NT 3.1 the DLL init code fails the load and produces an ugly dialog, so we don't
// bother
if (IsWin32NT())
{
const WORD Ver = LOWORD( GetVersion() );
if (
(LOBYTE(Ver) == 3) && // NT 3.5 is minimum requirement
(HIBYTE(Ver) < 50)
)
return FALSE;
}
// try the DLL now
WinGDLL = LoadLibrary("WING32.DLL");
if (WinGDLL)
{
// (ordinal values extracted from DLL using DUMPBIN -export)
pWinGCreateDC = (WING_CREATEDC) GetProcAddress( WinGDLL, MAKEINTRESOURCE(0x3e9) );
pWinGCreateBitmap = (WING_CREATEBITMAP) GetProcAddress( WinGDLL, MAKEINTRESOURCE(0x3eb) );
pWinGBitBlt = (WING_BITBLT) GetProcAddress( WinGDLL, MAKEINTRESOURCE(0x3f2) );
pWinGRecommendedDIBFormat =
(WING_RECOMMENDED) GetProcAddress( WinGDLL, MAKEINTRESOURCE( 0x3ea ) );
if (
(pWinGCreateDC == NULL) ||
(pWinGCreateBitmap == NULL) ||
(pWinGBitBlt == NULL) ||
(pWinGRecommendedDIBFormat==NULL)
)
{
TRACE( _T("WinG32 DLL entrypoints missing!\n"));
FreeLibrary( WinGDLL );
WinGDLL = NULL;
return FALSE;
}
}
else
{
TRACE( _T("WinG DLL not found (error %d)\n"), GetLastError() );
return FALSE;
}
// remember the DLL handle so it gets cleaned up for us always on exit
ExtraDLLs[ WinG_DLL ] = WinGDLL;
RecommendedDIB.biSize = sizeof(BITMAPINFOHEADER);
// excuse the seemingly rampant cast but I think the official prototype is wrong
const BOOL ok = pWinGRecommendedDIBFormat( (LPBITMAPINFO)&RecommendedDIB );
if (IsUserName("Andy"))
{
TRACE( _T("Recommended bitmap:\n"));
if (ok)
{
TRACE( _T("%dx%d height=%d comp=%d\n"),
(INT32)RecommendedDIB.biPlanes,
(INT32)RecommendedDIB.biBitCount,
(INT32)RecommendedDIB.biHeight,
(INT32)RecommendedDIB.biCompression
);
}
else
TRACE( _T("ERROR - isnt one\n"));
}
OffScreenDC = pWinGCreateDC();
if (OffScreenDC)
return TRUE;
#endif
// if we get here it means we failed
return FALSE;
}
static void InternalAssert(const TCHAR * AssertDescription, const char * lpszFileName, INT32 nLine, BOOL UseMFC)
{
if (!UseMFC)
#if defined(__WXMSW__)
MessageBeep(MB_ICONASTERISK);
#else
::wxBell();
#endif
#ifdef _ENSURES
TCHAR sz[256];
static TCHAR BASED_CODE szTitle[] = wxT("Ensure Failed!");
// In Unicode we need to convert the filename to TCHAR
#if 0 != wxUSE_UNICODE
TCHAR szRealFile[256];
size_t count = camMbstowcs(szRealFile, lpszFileName, 255);
if (count == (size_t)-1)
count = 0;
szRealFile[count] = (TCHAR)0;
const TCHAR* lpszRealFile = szRealFile;
#else
const TCHAR* lpszRealFile = lpszFileName;
#endif
static TCHAR BASED_CODE szMessage[] = wxT("%s, File %s, Line %d");
static TCHAR BASED_CODE szMessageNoReason[] = wxT("Error %d@%s"); // note number first
// get app name or NULL if unknown (don't call assert)
// const TCHAR *pszAppName = wxGetApp().GetAppName();
if (AssertDescription != NULL)
{
camSnprintf(sz, 255,
szMessage,
AssertDescription,
lpszRealFile,
nLine);
}
else
{
camSnprintf(sz, 255,
szMessageNoReason,
nLine,
lpszRealFile);
}
#ifdef _DEBUG
//PORTNOTE("other","Remove afxTraceEnabled")
//#ifndef EXCLUDE_FROM_XARALX
// if (afxTraceEnabled)
#if defined(__WXMSW__)
{
// assume the debugger or auxiliary port
#ifndef _MAC
::OutputDebugString(sz);
::OutputDebugString(_T(", "));
::OutputDebugString(szTitle);
::OutputDebugString(_T("\n\r"));
#else
// Mac version needs them all together
camStrcat(sz, _T(", "));
camStrcat(sz,szTitle);
camStrcat(sz,_T("\n\r"));
::OutputDebugString(sz);
#endif
}
#endif
#endif
if (AssertBusy > 0)
{
// getting assertion while inside an assertion
// - it has already been traced, but
// break into the debugger (or Dr Watson log)
DEBUGBREAK; // else Win32s might die (just beeps)
return;
}
AssertBusy++;
if ( Error::IsInRenderThread() )
{
TRACE( wxT("In RenderThread so clearing up system") );
Error::RenderThreadReset();
// Commented out - no problem using wx for render errors
// UseMFC = FALSE; // mustn't use MFC for render errors
}
INT32 result;
TCHAR RealErrorMsg[256];
if (UseMFC)
{
// use our error handler to report ensures as it is more robust instead of MessageBox
// The arrangement of buttons is the same as the exception handler dialog, not the same
// as the original Ensure dialog (which was Abort/Retry/Ignore)
ErrorInfo Info;
// try to preserve original error message
camStrcpy( RealErrorMsg, Error::GetErrorString() );
Error::SetErrorSerious( sz ); // set error msg (vaping any previous one)
Info.ErrorMsg = 0;
Info.Button[0] = _R(IDS_CONTINUE);
Info.Button[1] = _R(IDS_QUIT);
#ifndef EXCLUDE_FROM_XARALX
if (IsWin32NT())
{
#endif
// only NT can cope with an Abort button
Info.Button[2] = _R(IDS_ABORT);
Info.Button[3] = _R(IDS_DEBUG);
#ifndef EXCLUDE_FROM_XARALX
}
else
{
Info.Button[2] = _R(IDS_DEBUG);
}
#endif
// no default button (or Help)
Info.Cancel = 1; // Esc = Continue
result = InformGeneral( ERRORTYPE_ENSURE, &Info );
}
else
{
CamResource::DoneInit();
CCamApp::DisableSystem();
// e.g. if this an MFC assert, don't use our lovely error handler becuase that itself
// uses MFC. Instead we use good old MessageBox
#if !defined(EXCLUDE_FROM_RALPH) && !defined(EXCLUDE_FROM_XARALX)
wxWindow *pParent = AfxGetApp().GetTopWindow();
PORTNOTE("other","Use CInformErrorDialog::GetSafeParent() when implemented")
#ifndef EXCLUDE_FROM_XARALX
CInformErrorDialog::GetSafeParent();
#endif
#else
wxWindow *pParent = NULL;
#endif
wxMessageDialog Dialog( pParent, sz, szTitle, wxICON_HAND | wxYES_NO | wxCANCEL );
INT32 nCode = Dialog.ShowModal();
CCamApp::EnableSystem();
// convert MessageBox return value into a sane button ID
switch (nCode)
{
case wxID_NO:
result = _R(IDS_ABORT);
break;
case wxID_YES:
result = _R(IDS_DEBUG);
break;
case wxID_CANCEL:
default:
result = _R(IDS_CONTINUE);
break;
}
}
AssertBusy--;
if ((ResourceID)result == _R(IDS_DEBUG))
{
DEBUGBREAK;
}
// no action on _R(IDS_CONTINUE))
else if ((ResourceID)result == _R(IDS_QUIT))
{
// quit in a slightly nice way
wxWindow *MainWnd = AfxGetApp().GetTopWindow();
if( MainWnd && MainWnd->IsShown() )
{
MainWnd->Destroy();
}
} // drop through
if (((ResourceID)result == _R(IDS_ABORT)) || ((ResourceID)result == _R(IDS_QUIT)))
{
// if no window, try nasty exit
AfxAbort();
return; // how did we get here?
}
// if we ever get here we just carry on as if nothing happened
PORTNOTE("other","We can never use MFC again")
#ifndef EXCLUDE_FROM_XARALX
if (UseMFC)
{
if (RealErrorMsg[0])
Error::SetErrorSerious( RealErrorMsg ); // restore previous error msg
else
Error::ClearError();
}
#endif
#else
// parameters not used if non-debug
(void)lpszFileName;
(void)nLine;
#endif // _ENSURES
}
