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Diffstat (limited to 'ext/win32ole/win32ole.c')
-rw-r--r--ext/win32ole/win32ole.c48
1 files changed, 47 insertions, 1 deletions
diff --git a/ext/win32ole/win32ole.c b/ext/win32ole/win32ole.c
index 7d725e4737a..c613a85daed 100644
--- a/ext/win32ole/win32ole.c
+++ b/ext/win32ole/win32ole.c
@@ -80,7 +80,7 @@
#define WC2VSTR(x) ole_wc2vstr((x), TRUE)
-#define WIN32OLE_VERSION "0.9.2"
+#define WIN32OLE_VERSION "0.9.3"
typedef HRESULT (STDAPICALLTYPE FNCOCREATEINSTANCEEX)
(REFCLSID, IUnknown*, DWORD, COSERVERINFO*, DWORD, MULTI_QI*);
@@ -320,6 +320,7 @@ static VALUE make_oletypelib_obj(VALUE guid, VALUE major_version, VALUE minor_ve
static VALUE ole_typelib_from_itypelib(ITypeLib *pTypeLib);
static VALUE ole_typelib_from_itypeinfo(ITypeInfo *pTypeInfo);
static VALUE fole_typelib(VALUE self);
+static VALUE fole_query_interface(VALUE self, VALUE str_iid);
static HRESULT ole_docinfo_from_type(ITypeInfo *pTypeInfo, BSTR *name, BSTR *helpstr, DWORD *helpcontext, BSTR *helpfile);
static VALUE ole_usertype2val(ITypeInfo *pTypeInfo, TYPEDESC *pTypeDesc, VALUE typedetails);
static VALUE ole_typedesc2val();
@@ -3823,6 +3824,50 @@ fole_typelib(VALUE self)
return vtlib;
}
+/*
+ * call-seq:
+ * WIN32OLE#ole_query_interface(iid) -> WIN32OLE object
+ *
+ * Returns WIN32OLE object for a specific dispatch or dual
+ * interface specified by iid.
+ *
+ * ie = WIN32OLE.new('InternetExplorer.Application')
+ * ie_web_app = ie.ole_query_interface('{0002DF05-0000-0000-C000-000000000046}') # => WIN32OLE object for dispinterface IWebBrowserApp
+ */
+static VALUE
+fole_query_interface(VALUE self, VALUE str_iid)
+{
+ HRESULT hr;
+ OLECHAR *pBuf;
+ IID iid;
+ struct oledata *pole;
+ IDispatch *pDispatch;
+
+ pBuf = ole_mb2wc(StringValuePtr(str_iid), -1);
+ hr = CLSIDFromString(pBuf, &iid);
+ SysFreeString(pBuf);
+ if(FAILED(hr)) {
+ ole_raise(hr, eWIN32OLERuntimeError,
+ "illegal iid: `%s'",
+ StringValuePtr(str_iid));
+ }
+
+ OLEData_Get_Struct(self, pole);
+ if(!pole->pDispatch) {
+ rb_raise(rb_eRuntimeError, "failed to get dispatch interface");
+ }
+
+ hr = pole->pDispatch->lpVtbl->QueryInterface(pole->pDispatch, &iid,
+ (void **)&pDispatch);
+ if(FAILED(hr)) {
+ ole_raise(hr, eWIN32OLERuntimeError,
+ "failed to get interface `%s'",
+ StringValuePtr(str_iid));
+ }
+
+ return create_win32ole_object(cWIN32OLE, pDispatch, 0, 0);
+}
+
static HRESULT
ole_docinfo_from_type(ITypeInfo *pTypeInfo, BSTR *name, BSTR *helpstr, DWORD *helpcontext, BSTR *helpfile)
{
@@ -7397,6 +7442,7 @@ Init_win32ole()
rb_define_method(cWIN32OLE, "ole_type", fole_type, 0);
rb_define_alias(cWIN32OLE, "ole_obj_help", "ole_type");
rb_define_method(cWIN32OLE, "ole_typelib", fole_typelib, 0);
+ rb_define_method(cWIN32OLE, "ole_query_interface", fole_query_interface, 1);
rb_define_const(cWIN32OLE, "VERSION", rb_str_new2(WIN32OLE_VERSION));
rb_define_const(cWIN32OLE, "ARGV", rb_ary_new());