+// ---------------------- global functions ----------------------------------
+
+VALUE gfx_setparameter(VALUE module, VALUE _key, VALUE _value)
+{
+ Check_Type(_key, T_STRING);
+ Check_Type(_value, T_STRING);
+ const char*key = StringValuePtr(_key);
+ const char*value = StringValuePtr(_value);
+ pdfdriver->setparameter(pdfdriver, key, value);
+ swfdriver->setparameter(swfdriver, key, value);
+ imagedriver->setparameter(imagedriver, key, value);
+ return GFX;
+}