2 replies to this topic

[Ped Xing]

I'm having trouble making my script file read a *bstr from my host program. I define the bstr like so: asBSTR *timeStr; I register the bstr like so: r = engine->RegisterObjectProperty("CGame", "bstr timeStr", offsetof(CGame, timeStr)); assert( r >= 0 ); Then I have a function that returns a Time String:

asBSTR* TimeString()
{
	char buffer[100];
	if (game.min < 10)
	{
		if (game.sec < 10) sprintf(buffer, "0%d'0%d", game.min, game.sec);
		else sprintf(buffer, "0%d'%d", game.min, game.sec);
	} else {
		if (game.sec < 10) sprintf(buffer, "%d'0%d", game.min, game.sec);
		else sprintf(buffer, "%d'0%d", game.min, game.sec);
	}
	return (asBSTR*)buffer;
}

Then every frame I make game.timeStr = TimeString(); inside of my host. When the player dies I want a script file to print the time that he played. So I do this: bstr s = "Time: "; s += game.timeStr; And it crashes my progam. Any advice?

[jetro]

Here's an example of how I am returning bstr to script code. At least this doesn't crash, hopefully this is correct regarding memory usage as well.

static asBSTR script_Object_getName(Object *o)
{
    char *name = o->getName();
    asBSTR res = asBStrAlloc(strlen(name));
    strcpy((char *)res, name);
    return res;
}

[Gyrbo]

The problem is the bstr has an extra dword at the start with the size of the string. You have to use BstrAlloc() to create an asBSTR