DllMain中创建的窗体得不到SOCKET消息？！

我的一个程序，已经最小化了。
两个测试，代码99.99%相同，一个是Dll用LoadLibrary载入以后没有
发声，另一个Exe就正常地发出两声，跟踪了一下，Dll的那个窗体压根就没有得到任何WM_SOCKET_NOTIFY消息，我是按照介绍上把WM_SOCKET_NOTIFY设为WM_USER + 1的，有没有解决的办法。


// TestDLl.cpp : Defines the entry point for the DLL application.
//

#include \"stdafx.h\"
#define WM_SOCKET_NOTIFY (WM_USER + 1)
#include <TCHAR.H>
#include <winsock2.h>
#pragma comment(lib, \"ws2_32\")
LRESULT CALLBACK MainWndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam);

BOOL APIENTRY DllMain( HANDLE hModule,
                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved
)
{
MSG msg;
HWND hWnd;
WNDCLASS wndclass;
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = MainWndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = (struct HINSTANCE__ *)hModule;
wndclass.hIcon = NULL;
wndclass.hCursor = NULL;
wndclass.hbrBackground = NULL;
wndclass.lpszMenuName = NULL;
wndclass.lpszClassName = _T(\" \");

if(!RegisterClass(&wndclass))
return FALSE;
hWnd = CreateWindow(_T(\" \"), _T(\"\"), WS_DISABLED, CW_USEDEFAULT, CW_USEDEFAULT, \\
CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, (struct HINSTANCE__ *)hModule, NULL);
if(!hWnd)
return FALSE;
ShowWindow(hWnd,SW_HIDE);
UpdateWindow(hWnd);

while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}

return msg.wParam;
}

LRESULT CALLBACK MainWndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam)
{

switch(message)
{
case WM_CREATE:
{
WSADATA wsaData;
WSAStartup(MAKEWORD(2,1),&wsaData);
sockaddr_in sa;
SOCKET sNet = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if(sNet != INVALID_SOCKET)
{
if(WSAAsyncSelect(sNet, hWnd, WM_SOCKET_NOTIFY, \\
FD_CONNECT | FD_CLOSE | FD_READ | FD_WRITE | FD_OOB) != SOCKET_ERROR)
{
sa.sin_family = PF_INET;
sa.sin_port = htons(80);
sa.sin_addr.S_un.S_addr = inet_addr(\"127.0.0.1\");
connect(sNet, (SOCKADDR *)&sa, sizeof(sa));
}
}
}
case WM_SOCKET_NOTIFY:
{
switch(lParam)
{
case FD_CONNECT:
Beep(500, 500);
Beep(600, 500);
break;//连上了
default:
break;
}
}
default:
break;
}
return DefWindowProc(hWnd,message,wParam,lParam);
}


但是用Exe就可以，就会响两声。
// testExe.cpp : Defines the entry point for the application.
//

#include \"stdafx.h\"
#define WM_SOCKET_NOTIFY (WM_USER + 1)
#include <TCHAR.H>
#include <winsock2.h>
#pragma comment(lib, \"ws2_32\")
LRESULT CALLBACK MainWndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam);

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
  // TODO: Place code here.
MSG msg;
HWND hWnd;
WNDCLASS wndclass;
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = MainWndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
// wndclass.hInstance = (struct HINSTANCE__ *)hModule;
wndclass.hInstance = hInstance;
wndclass.hIcon = NULL;
wndclass.hCursor = NULL;
wndclass.hbrBackground = NULL;
wndclass.lpszMenuName = NULL;
wndclass.lpszClassName = _T(\" \");

if(!RegisterClass(&wndclass))
return FALSE;
hWnd = CreateWindow(_T(\" \"), _T(\"\"), WS_DISABLED, CW_USEDEFAULT, CW_USEDEFAULT, \\
CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);
if(!hWnd)
return FALSE;
ShowWindow(hWnd,SW_HIDE);
UpdateWindow(hWnd);

while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}

return msg.wParam;
}

LRESULT CALLBACK MainWndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam)
{

switch(message)
{
case WM_CREATE:
{
WSADATA wsaData;
WSAStartup(MAKEWORD(2,1),&wsaData);
sockaddr_in sa;
SOCKET sNet = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if(sNet != INVALID_SOCKET)
{
if(WSAAsyncSelect(sNet, hWnd, WM_SOCKET_NOTIFY, \\
FD_CONNECT | FD_CLOSE | FD_READ | FD_WRITE | FD_OOB) != SOCKET_ERROR)
{
sa.sin_family = PF_INET;
sa.sin_port = htons(80);
sa.sin_addr.S_un.S_addr = inet_addr(\"127.0.0.1\");
connect(sNet, (SOCKADDR *)&sa, sizeof(sa));
}
}
}
case WM_SOCKET_NOTIFY:
{
switch(lParam)
{
case FD_CONNECT:
Beep(500, 500);
Beep(600, 500);
break;//连上了
default:
break;
}
}
default:
break;
}
return DefWindowProc(hWnd,message,wParam,lParam);
}

跟踪了一下，Dll的那个窗体根本就没有任何WM_SOCKET_NOTIFY消息传入，又没有人能解决，xx。



[编辑 -  3/14/05 by  pwpwpw123]

[编辑 -  3/14/05 by  pwpwpw123]

[编辑 -  3/14/05 by  pwpwpw123]

有没有个监视系统消息的软件啊

每人能回答这个问题吗？

有没有个监视系统消息的软件啊

SPY++，VC自带，Delphi带的是Winsight32

你已经陷在DllMain的消息循环中，无法返回true，你的DLL就无法被Windows加载成功