+
+// ----------------------------------------------------------------------------
+// Convert variants
+// ----------------------------------------------------------------------------
+
+#if wxUSE_VARIANT
+
+/*
+ * wxClearVariant
+ *
+ * Zeros a variant structure without regard to current contents
+ */
+void wxClearVariant(VARIANTARG *pvarg)
+{
+ pvarg->vt = VT_EMPTY;
+ pvarg->wReserved1 = 0;
+ pvarg->wReserved2 = 0;
+ pvarg->wReserved3 = 0;
+ pvarg->lVal = 0;
+}
+
+/*
+ * wxReleaseVariant
+ *
+ * Clears a particular variant structure and releases any external objects
+ * or memory contained in the variant. Supports the data types listed above.
+ */
+void wxReleaseVariant(VARIANTARG *pvarg)
+{
+ VARTYPE vt;
+ VARIANTARG _huge *pvargArray;
+ LONG lLBound, lUBound, l;
+
+ vt = (VARTYPE)(pvarg->vt & 0xfff); // mask off flags
+
+ // check if an array. If so, free its contents, then the array itself.
+ if (V_ISARRAY(pvarg))
+ {
+ // variant arrays are all this routine currently knows about. Since a
+ // variant can contain anything (even other arrays), call ourselves
+ // recursively.
+ if (vt == VT_VARIANT)
+ {
+ SafeArrayGetLBound(pvarg->parray, 1, &lLBound);
+ SafeArrayGetUBound(pvarg->parray, 1, &lUBound);
+
+ if (lUBound > lLBound)
+ {
+ lUBound -= lLBound;
+
+ SafeArrayAccessData(pvarg->parray, (void**)&pvargArray);
+
+ for (l = 0; l < lUBound; l++)
+ {
+ wxReleaseVariant(pvargArray);
+ pvargArray++;
+ }
+
+ SafeArrayUnaccessData(pvarg->parray);
+ }
+ }
+ else
+ {
+ wxLogWarning(wxT("wxReleaseVariant: Array contains non-variant type"));
+ }
+
+ // Free the array itself.
+ SafeArrayDestroy(pvarg->parray);
+ }
+ else
+ {
+ switch (vt)
+ {
+ case VT_DISPATCH:
+ if (pvarg->pdispVal)
+ pvarg->pdispVal->Release();
+ break;
+
+ case VT_BSTR:
+ SysFreeString(pvarg->bstrVal);
+ break;
+
+ case VT_I2:
+ case VT_I4:
+ case VT_BOOL:
+ case VT_R8:
+ case VT_ERROR: // to avoid erroring on an error return from Excel
+ case VT_EMPTY:
+ case VT_DATE:
+ // no work for these types
+ break;
+
+ default:
+ wxLogWarning(wxT("wxReleaseVariant: Unknown type"));
+ break;
+ }
+ }
+
+ wxClearVariant(pvarg);
+}
+
+WXDLLEXPORT bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant)
+{
+ wxClearVariant(&oleVariant);
+ if (variant.IsNull())
+ {
+ oleVariant.vt = VT_NULL;
+ return true;
+ }
+
+ wxString type(variant.GetType());
+
+
+ if (type == wxT("long"))
+ {
+ oleVariant.vt = VT_I4;
+ oleVariant.lVal = variant.GetLong() ;
+ }
+ // cVal not always present
+#ifndef __GNUWIN32__
+ else if (type == wxT("char"))
+ {
+ oleVariant.vt=VT_I1; // Signed Char
+ oleVariant.cVal=variant.GetChar();
+ }
+#endif
+ else if (type == wxT("double"))
+ {
+ oleVariant.vt = VT_R8;
+ oleVariant.dblVal = variant.GetDouble();
+ }
+ else if (type == wxT("bool"))
+ {
+ oleVariant.vt = VT_BOOL;
+ // 'bool' required for VC++ 4 apparently
+#if (defined(__VISUALC__) && (__VISUALC__ <= 1000))
+ oleVariant.bool = variant.GetBool();
+#else
+ oleVariant.boolVal = variant.GetBool();
+#endif
+ }
+ else if (type == wxT("string"))
+ {
+ wxString str( variant.GetString() );
+ oleVariant.vt = VT_BSTR;
+ oleVariant.bstrVal = wxConvertStringToOle(str);
+ }
+#if wxUSE_DATETIME
+ else if (type == wxT("datetime"))
+ {
+ wxDateTime date( variant.GetDateTime() );
+ oleVariant.vt = VT_DATE;
+
+ SYSTEMTIME st;
+ date.GetAsMSWSysTime(&st);
+
+ SystemTimeToVariantTime(&st, &oleVariant.date);
+ }
+#endif
+ else if (type == wxT("void*"))
+ {
+ oleVariant.vt = VT_DISPATCH;
+ oleVariant.pdispVal = (IDispatch*) variant.GetVoidPtr();
+ }
+ else if (type == wxT("list") || type == wxT("stringlist"))
+ {
+ oleVariant.vt = VT_VARIANT | VT_ARRAY;
+
+ SAFEARRAY *psa;
+ SAFEARRAYBOUND saBound;
+ VARIANTARG *pvargBase;
+ VARIANTARG *pvarg;
+ int i, j;
+
+ int iCount = variant.GetCount();
+
+ saBound.lLbound = 0;
+ saBound.cElements = iCount;
+
+ psa = SafeArrayCreate(VT_VARIANT, 1, &saBound);
+ if (psa == NULL)
+ return false;
+
+ SafeArrayAccessData(psa, (void**)&pvargBase);
+
+ pvarg = pvargBase;
+ for (i = 0; i < iCount; i++)
+ {
+ // copy each string in the list of strings
+ wxVariant eachVariant(variant[i]);
+ if (!wxConvertVariantToOle(eachVariant, * pvarg))
+ {
+ // memory failure: back out and free strings alloc'ed up to
+ // now, and then the array itself.
+ pvarg = pvargBase;
+ for (j = 0; j < i; j++)
+ {
+ SysFreeString(pvarg->bstrVal);
+ pvarg++;
+ }
+ SafeArrayDestroy(psa);
+ return false;
+ }
+ pvarg++;
+ }
+
+ SafeArrayUnaccessData(psa);
+
+ oleVariant.parray = psa;
+ }
+ else
+ {
+ oleVariant.vt = VT_NULL;
+ return false;
+ }
+ return true;
+}
+
+#ifndef VT_TYPEMASK
+#define VT_TYPEMASK 0xfff
+#endif
+
+WXDLLEXPORT bool
+wxConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant)
+{
+ bool ok = true;
+ if ( oleVariant.vt & VT_ARRAY )
+ {
+
+ // Compute the total number of elements in all array dimensions
+ int cElements = 1;
+ for ( int cDims = 0; cDims < oleVariant.parray->cDims; cDims++ )
+ cElements *= oleVariant.parray->rgsabound[cDims].cElements;
+
+ // Get a pointer to the data
+ void* pvdata;
+ HRESULT hr = SafeArrayAccessData(oleVariant.parray, &pvdata);
+ if ( FAILED(hr) )
+ return false;
+
+ switch (oleVariant.vt & VT_TYPEMASK)
+ {
+ case VT_VARIANT:
+ {
+ variant.ClearList();
+ VARIANTARG *variant_data=(VARIANTARG*)pvdata;
+ for ( int i = 0; i < cElements; i++ )
+ {
+ VARIANTARG& oleElement = variant_data[i];
+ wxVariant vElement;
+ if ( !wxConvertOleToVariant(oleElement, vElement) )
+ {
+ ok = false;
+ variant.ClearList();
+ break;
+ }
+
+ variant.Append(vElement);
+ }
+ }
+ break;
+
+ case VT_BSTR:
+ {
+ wxArrayString strings;
+ BSTR *string_val=(BSTR*)pvdata;
+ for ( int i = 0; i < cElements; ++i )
+ {
+ wxString str=wxConvertStringFromOle(*string_val);
+ strings.Add(str);
+ ++string_val;
+ }
+ variant=strings;
+ }
+ break;
+
+ default:
+ wxLogDebug(wxT("unhandled VT_ARRAY type %x in wxConvertOleToVariant"),
+ oleVariant.vt & VT_TYPEMASK);
+ variant = wxVariant();
+ ok = false;
+ break;
+ }
+
+ SafeArrayUnaccessData(oleVariant.parray);
+ }
+ else if ( oleVariant.vt & VT_BYREF )
+ {
+ switch ( oleVariant.vt & VT_TYPEMASK )
+ {
+ case VT_VARIANT:
+ {
+ VARIANTARG& oleReference = *((LPVARIANT)oleVariant.byref);
+ if (!wxConvertOleToVariant(oleReference,variant))
+ return false;
+ break;
+ }
+
+ default:
+ wxLogError(wxT("wxAutomationObject::ConvertOleToVariant: [as yet] unhandled reference %X"),
+ oleVariant.vt);
+ return false;
+ }
+ }
+ else // simply type (not array or reference)
+ {
+ switch ( oleVariant.vt & VT_TYPEMASK )
+ {
+ case VT_BSTR:
+ {
+ wxString str(wxConvertStringFromOle(oleVariant.bstrVal));
+ variant = str;
+ }
+ break;
+
+ case VT_DATE:
+#if wxUSE_DATETIME
+ {
+ SYSTEMTIME st;
+ VariantTimeToSystemTime(oleVariant.date, &st);
+
+ wxDateTime date;
+ date.SetFromMSWSysTime(st);
+ variant = date;
+ }
+#endif // wxUSE_DATETIME
+ break;
+
+ case VT_I4:
+ variant = (long) oleVariant.lVal;
+ break;
+
+ case VT_I2:
+ variant = (long) oleVariant.iVal;
+ break;
+
+ case VT_BOOL:
+ variant = oleVariant.boolVal != 0;
+ break;
+
+ case VT_R8:
+ variant = oleVariant.dblVal;
+ break;
+
+ case VT_DISPATCH:
+ variant = (void*) oleVariant.pdispVal;
+ break;
+
+ case VT_NULL:
+ variant.MakeNull();
+ break;
+
+ case VT_EMPTY:
+ break; // Ignore Empty Variant, used only during destruction of objects
+
+ default:
+ wxLogError(wxT("wxAutomationObject::ConvertOleToVariant: Unknown variant value type %X -> %X"),
+ oleVariant.vt,oleVariant.vt&VT_TYPEMASK);
+ return false;
+ }
+ }
+
+ return ok;
+}
+
+#endif // wxUSE_VARIANT
+
projects / wxWidgets.git / commitdiff
