Re: How to get the current thread in C code?
[
Date Prev][
Date Next][
Thread Prev][
Thread Next]
[
Date Index]
[
Thread Index]
- Subject: Re: How to get the current thread in C code?
- From: "mark gossage " <mark@...>
- Date: 2006年12月20日 18:06:20 -0700
Hello Cloud,
This is not so much a Lua question, more a Windows question, but anyway.
Your options are:
1. The Global Variable
2. GetWindowLong/SetWindowLong
Option 1 is just plain obvious, have a global lua_State* L somewhere. It works fine, provided there is only one lua_State in the application.
Option 2 is for when you need one lua_State per window.
You can read MSDN on GetWindowLong/SetWindowLong (I won't explain them).
But the following code will give you an idea:
// init code
hWnd=CreateWindow(....);
lua_State* L=lua_open();
SetWindowLong(hWnd,(LONG)L); // put the state into the window
static LRESULT CALLBACK
WndProc(HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam)
{
lua_State* L=(lua_State*)GetWindowLong(hWnd,GWL_USERDATA);
// etc
}
Hope that helps,
Mark
> Hello ,
>
> When I wrote a windows application embedding lua, I want to call
> some lua code in WinProc . Like this :
>
> -------------------------------
> static LRESULT CALLBACK
> WndProc(HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam)
> {
> switch (iMessage) {
> case WM_MOUSEMOVE:
> /* call some lua function */
> ...
> ---------------------------------
>
> But in WndProc , I can't get the running thread in lua .
> I can store the main lua state in a global variable, but the
> main lua state may not be the running thread. And I have no way
> to pass the L into the WndProc .
>
> How to get the current thread from the main lua state in C ?
>
> --
> Best regards,
> Cloud mailto:cloudwu@163.com
> http://blog.codingnow.com