147 lines
4.3 KiB
C++
147 lines
4.3 KiB
C++
#include "shellprv.h"
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#pragma hdrstop
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#include "xiconwrap.h"
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// From cplobj.c
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EXTERN_C BOOL CPL_FindCPLInfo(LPTSTR pszCmdLine, HICON *phIcon, UINT *ppapl, LPTSTR *pparm);
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class CCtrlExtIconBase : public CExtractIconBase
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{
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public:
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HRESULT _GetIconLocationW(UINT uFlags, LPWSTR pszIconFile, UINT cchMax, int *piIndex, UINT *pwFlags);
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HRESULT _ExtractW(LPCWSTR pszFile, UINT nIconIndex, HICON *phiconLarge, HICON *phiconSmall, UINT nIconSize);
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CCtrlExtIconBase(LPCWSTR pszSubObject);
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protected:
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~CCtrlExtIconBase();
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private:
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TCHAR _szSubObject[MAX_PATH];
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HICON _hIcon;
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UINT _nControl;
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};
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CCtrlExtIconBase::CCtrlExtIconBase(LPCWSTR pszSubObject) : CExtractIconBase(), _hIcon(NULL), _nControl(-1)
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{
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lstrcpyn(_szSubObject, pszSubObject, ARRAYSIZE(_szSubObject));
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}
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CCtrlExtIconBase::~CCtrlExtIconBase()
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{
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if (_hIcon)
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DestroyIcon(_hIcon);
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}
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STDAPI ControlExtractIcon_CreateInstance(LPCTSTR pszSubObject, REFIID riid, void** ppv)
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{
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HRESULT hr;
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CCtrlExtIconBase* pceib = new CCtrlExtIconBase(pszSubObject);
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if (pceib)
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{
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hr = pceib->QueryInterface(riid, ppv);
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pceib->Release();
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}
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else
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{
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hr = E_OUTOFMEMORY;
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}
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return hr;
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}
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HRESULT CCtrlExtIconBase::_GetIconLocationW(UINT uFlags, LPWSTR pszIconFile,
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UINT cchMax, int *piIndex, UINT *pwFlags)
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{
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HRESULT hr = S_FALSE;
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if (!(uFlags & GIL_OPENICON))
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{
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lstrcpyn(pszIconFile, _szSubObject, cchMax);
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LPTSTR pszComma = StrChr(pszIconFile, TEXT(','));
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if (pszComma)
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{
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*pszComma ++= 0;
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*piIndex = StrToInt(pszComma);
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*pwFlags = GIL_PERINSTANCE;
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//
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// normally the index will be negative (a resource id)
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// check for some special cases like dynamic icons and bogus ids
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//
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if (*piIndex == 0)
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{
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LPTSTR lpExtraParms = NULL;
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// this is a dynamic applet icon
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*pwFlags |= GIL_DONTCACHE | GIL_NOTFILENAME;
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// use the applet index in case there's more than one
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if ((_hIcon != NULL) || CPL_FindCPLInfo(_szSubObject, &_hIcon,
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&_nControl, &lpExtraParms))
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{
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*piIndex = _nControl;
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}
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else
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{
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// we failed to load the applet all of the sudden
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// use the first icon in the cpl file (*piIndex == 0)
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//
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// Assert(FALSE);
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DebugMsg(DM_ERROR,
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TEXT("Control Panel CCEIGIL: ") TEXT("Enumeration failed \"%s\""),
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_szSubObject);
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}
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}
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else if (*piIndex > 0)
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{
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// this is an invalid icon for a control panel
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// use the first icon in the file
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// this may be wrong but it's better than a generic doc icon
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// this fixes ODBC32 which is NOT dynamic but returns bogus ids
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*piIndex = 0;
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}
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hr = S_OK;
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}
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}
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return hr;
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}
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HRESULT CCtrlExtIconBase::_ExtractW(LPCWSTR pszFile, UINT nIconIndex,
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HICON *phiconLarge, HICON *phiconSmall, UINT nIconSize)
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{
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LPTSTR lpExtraParms = NULL;
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HRESULT hr = S_FALSE;
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//-------------------------------------------------------------------
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// if there is no icon index then we must extract by loading the dude
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// if we have an icon index then it can be extracted with ExtractIcon
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// (which is much faster)
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// only perform a custom extract if we have a dynamic icon
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// otherwise just return S_FALSE and let our caller call ExtractIcon.
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//-------------------------------------------------------------------
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LPCTSTR p = StrChr(_szSubObject, TEXT(','));
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if ((!p || !StrToInt(p+1)) &&
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((_hIcon != NULL) || CPL_FindCPLInfo(_szSubObject, &_hIcon,
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&_nControl, &lpExtraParms)))
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{
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if (_hIcon)
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{
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*phiconLarge = CopyIcon(_hIcon);
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*phiconSmall = NULL;
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if( *phiconLarge )
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hr = S_OK;
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}
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}
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return hr;
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}
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