Hi I have written one server which have one method sum which is exposed to client through DBUS. my client calls this method with 2 input parameters and one output parameter (collect the sum of 2 input nos), but i am not able to receive  any change in my output parameter though the method is executed. Following is my XML file <?xml version="1.0" encoding="UTF-8" ?> <node name="/com/example/MyServer">     <interface name="com.example.MyServer">     <annotation name="org.freedesktop.DBus.GLib.CSymbol" value="my_server"/>     <method name="NoArgs">       <annotation name="org.freedesktop.DBus.GLib.CSymbol" value="my_server_no_args"/>     </method>     <method name="Sum">       <annotation name="org.freedesktop.DBus.GLib.CSymbol" value="my_server_sum"/>       <arg type="i" name="num1" direction="in" />       <arg type="i" name="num2" direction="in" />       <arg type="i" name="sum" direction="out" />     </method>   </interface> </node> Following is the implementation of function in server gboolean my_server_sum(int num1,int num2,int *sum) {     printf("\n num1 = %d num2  = %d sum = %d \n",num1,num2,sum);        *sum = num1 + num2;    return TRUE; } Following is the call in client com_example_MyServer_sum (proxy,num1,num2,ptr,&error); where int num1 = 4, num2 = 3 ptr is integer pointer holding add of integer variable. printf on server side prints num1 = 134546064 num2 = 4 sum = 3 why is this happening? <hr size=1></hr> Here’s a new way to find what you're looking for - <a href="http://us.rd.yahoo.com/mail/in/yanswers/*http://in.answers.yahoo.com/">Yahoo! Answers</a>