vbscript: Added CStr implementation.

dlls/vbscript/global.c

@@ -402,8 +402,16 @@ static HRESULT Global_CSng(vbdisp_t *This, VARIANT *arg, unsigned args_cnt, VARI
 
 static HRESULT Global_CStr(vbdisp_t *This, VARIANT *arg, unsigned args_cnt, VARIANT *res)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    BSTR str;
+    HRESULT hres;
+
+    TRACE("%s\n", debugstr_variant(arg));
+
+    hres = to_string(arg, &str);
+    if(FAILED(hres))
+        return hres;
+
+    return return_bstr(res, str);
 }
 
 static inline WCHAR hex_char(unsigned n)

dlls/vbscript/tests/api.vbs

@@ -38,6 +38,18 @@ Call ok(getVT(vbFriday) = "VT_I2", "getVT(vbFriday) = " & getVT(vbFriday))
 Call ok(vbSaturday = 7, "vbSaturday = " & vbSaturday)
 Call ok(getVT(vbSaturday) = "VT_I2", "getVT(vbSaturday) = " & getVT(vbSaturday))
 
+Sub TestCStr(arg, exval)
+    dim x
+    x = CStr(arg)
+    Call ok(getVT(x) = "VT_BSTR*", "getVT(x) = " & getVT(x))
+    Call ok(x = exval, "CStr(" & arg & ") = " & x)
+End Sub
+
+TestCStr "test", "test"
+TestCStr 3, "3"
+TestCStr 3.5, "3.5"
+if isEnglishLang then TestCStr true, "True"
+
 Call ok(isObject(new EmptyClass), "isObject(new EmptyClass) is not true?")
 Set x = new EmptyClass
 Call ok(isObject(x), "isObject(x) is not true?")