[Mr. Zero]

So I have a forward that takes back a few strings.

PHP Code:

        result = Plugin_Continue;
        Call_StartForward(g_hGFwd_OnDisplay);
        Call_PushCell(client);
        Call_PushStringEx(name, sizeof(name), SM_PARAM_STRING_UTF8, SM_PARAM_COPYBACK);
        Call_PushCell(sizeof(name));
        Call_PushStringEx(param1, sizeof(param1), SM_PARAM_STRING_UTF8, SM_PARAM_COPYBACK);
        Call_PushCell(sizeof(param1));
        Call_PushStringEx(param2, sizeof(param2), SM_PARAM_STRING_UTF8, SM_PARAM_COPYBACK);
        Call_PushCell(sizeof(param2));
        Call_Finish(result); 


Now say another plugin changes param1 to "Hello world" and return Plugin_Changed. Then back in my call I update all the strings, unfortunately since the other two strings weren't set, they contain garbage.

So how can I set an initial value for copy back strings?

I tried strcopy into the copy back strings but that doesn't work.

[Wazz]

I believe just doing string[0] = '\0' will be enough to initialize it. It will set the first byte to the null terminator which marks the end of the string.

[bl4nk]

Declare the strings with 'new' instead of 'decl' for them to be auto-initialized to 0. Or do what Wazz said.

[psychonic]

You need to add SM_PARAM_STRING_COPY if you are using Call_PushStringEx and want the existing contents to be pushed through.