Applied gsockmsw.c 1.20 to 1.25 changes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@28534 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/gsockmsw.cpp

@@ -24,7 +24,7 @@
  * RPCNOTIFICATION_ROUTINE
  */
 #ifdef _MSC_VER
-#  pragma warning(disable:4115) /* named type definition in parentheses */
+#   pragma warning(disable:4115) /* named type definition in parentheses */
 #endif
 
 /* This needs to be before the wx/defs/h inclusion
@@ -32,7 +32,15 @@
  */
 
 #ifdef __WXWINCE__
-#include <windows.h>
+    /* windows.h results in tons of warnings at max warning level */
+#   ifdef _MSC_VER
+#       pragma warning(push, 1)
+#   endif
+#   include <windows.h>
+#   ifdef _MSC_VER
+#       pragma warning(pop)
+#       pragma warning(disable:4514)
+#   endif
 #endif
 
 #ifndef __GSOCKET_STANDALONE__
@@ -99,6 +107,7 @@ wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc);
 #error "MAXSOCKETS is too big!"
 #endif
 
+typedef int (PASCAL *WSAAsyncSelectFunc)(SOCKET,HWND,u_int,long);
 
 /* Global variables */
 
@@ -107,6 +116,8 @@ static HWND hWin;
 static CRITICAL_SECTION critical;
 static GSocket* socketList[MAXSOCKETS];
 static int firstAvailable;
+static WSAAsyncSelectFunc gs_WSAAsyncSelect = NULL;
+static HMODULE gs_wsock32dll = 0;
 
 /* Global initializers */
 
@@ -129,6 +140,17 @@ int _GSocket_GUI_Init(void)
   }
   firstAvailable = 0;
 
+  /* Load WSAAsyncSelect from wsock32.dll (we don't link against it
+     statically to avoid dependency on wsock32.dll for apps that don't use
+     sockets): */
+  gs_wsock32dll = LoadLibraryA("wsock32.dll");
+  if (!gs_wsock32dll)
+      return FALSE;
+  gs_WSAAsyncSelect =(WSAAsyncSelectFunc)GetProcAddress(gs_wsock32dll,
+                                                        "WSAAsyncSelect");
+  if (!gs_WSAAsyncSelect)
+      return FALSE;
+
   return TRUE;
 }
 
@@ -138,6 +160,13 @@ void _GSocket_GUI_Cleanup(void)
   DestroyWindow(hWin);
   UnregisterClass(CLASSNAME, INSTANCE);
 
+  /* Unlock wsock32.dll */
+  if (gs_wsock32dll)
+  {
+      FreeLibrary(gs_wsock32dll);
+      gs_wsock32dll = 0;
+  }
+
   /* Delete critical section */
   DeleteCriticalSection(&critical);
 }
@@ -267,7 +296,7 @@ void _GSocket_Enable_Events(GSocket *socket)
     long lEvent = socket->m_server?
                   FD_ACCEPT : (FD_READ | FD_WRITE | FD_CONNECT | FD_CLOSE);
 
-    WSAAsyncSelect(socket->m_fd, hWin, socket->m_msgnumber, lEvent);
+    gs_WSAAsyncSelect(socket->m_fd, hWin, socket->m_msgnumber, lEvent);
   }
 }
 
@@ -280,7 +309,7 @@ void _GSocket_Disable_Events(GSocket *socket)
 
   if (socket->m_fd != INVALID_SOCKET)
   {
-    WSAAsyncSelect(socket->m_fd, hWin, socket->m_msgnumber, 0);
+    gs_WSAAsyncSelect(socket->m_fd, hWin, socket->m_msgnumber, 0);
   }
 }