removed unused stuff (fixes a couple of compilation warnings)

[wxWidgets.git] / src / msw / gsockmsw.c

diff --git a/src/msw/gsockmsw.c b/src/msw/gsockmsw.c
index 32131c214a0c58f32feffafb2273eca237a9b1ef..246ae71c82b3f0066a621dc1156e160734f0ce8d 100644 (file)
--- a/src/msw/gsockmsw.c
+++ b/src/msw/gsockmsw.c
@@ -7,6 +7,14 @@
  * -------------------------------------------------------------------------
  */
 
+/*
+ * TODO: for WinCE we need to replace WSAAsyncSelect
+ * (Windows message-based notification of network events for a socket)
+ * with another mechanism.
+ * We may need to have a separate thread that polls for socket events
+ * using select() and sends a message to the main thread.
+ */
+
 /*
  * PLEASE don't put C++ comments here - this is a C source file.
  */
@@ -19,9 +27,17 @@
 #  pragma warning(disable:4115) /* named type definition in parentheses */
 #endif
 
+/* This needs to be before the wx/defs/h inclusion
+ * for some reason
+ */
+
+#ifdef __WXWINCE__
+#include <windows.h>
+#endif
+
 #ifndef __GSOCKET_STANDALONE__
-#include "wx/defs.h"
-#include "wx/setup.h"
+#   include "wx/platform.h"
+#   include "wx/setup.h"
 #endif
 
 #if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__)
@@ -31,6 +47,7 @@
 #include "wx/msw/gsockmsw.h"
 #include "wx/gsocket.h"
 
+HINSTANCE wxGetInstance(void);
 #define INSTANCE wxGetInstance()
 
 #else
@@ -46,7 +63,14 @@
 
 #endif /* __GSOCKET_STANDALONE__ */
 
+#ifndef __WXWINCE__
 #include <assert.h>
+#else
+#define assert(x)
+#include <winsock.h>
+#include "wx/msw/wince/net.h"
+#endif
+
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -60,7 +84,10 @@
 #endif
 
 #define CLASSNAME  TEXT("_GSocket_Internal_Window_Class")
-#define WINDOWNAME TEXT("_GSocket_Internal_Window_Name")
+
+/* implemented in utils.cpp */
+extern WXDLLIMPEXP_BASE HWND
+wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc);
 
 /* Maximum number of different GSocket objects at a given time.
  * This value can be modified at will, but it CANNOT be greater
@@ -72,6 +99,7 @@
 #error "MAXSOCKETS is too big!"
 #endif
 
+typedef int (PASCAL *WSAAsyncSelectFunc)(SOCKET,HWND,u_int,long);
 
 /* Global variables */
 
@@ -80,34 +108,20 @@ 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 */
 
-int GSocket_Init(void)
+int _GSocket_GUI_Init(void)
 {
-  WSADATA wsaData;
-  WNDCLASS winClass;
+  static LPCTSTR pclassname = NULL;
   int i;
 
   /* Create internal window for event notifications */
-  winClass.style         = 0;
-  winClass.lpfnWndProc   = _GSocket_Internal_WinProc;
-  winClass.cbClsExtra    = 0;
-  winClass.cbWndExtra    = 0;
-  winClass.hInstance     = INSTANCE;
-  winClass.hIcon         = (HICON) NULL;
-  winClass.hCursor       = (HCURSOR) NULL;
-  winClass.hbrBackground = (HBRUSH) NULL;
-  winClass.lpszMenuName  = (LPCTSTR) NULL;
-  winClass.lpszClassName = CLASSNAME;
-
-  RegisterClass(&winClass);
-  hWin = CreateWindow(CLASSNAME,
-                      WINDOWNAME,
-                      0, 0, 0, 0, 0,
-                      (HWND) NULL, (HMENU) NULL, INSTANCE, (LPVOID) NULL);
-
-  if (!hWin) return FALSE;
+  hWin = wxCreateHiddenWindow(&pclassname, CLASSNAME, _GSocket_Internal_WinProc);
+  if (!hWin)
+      return FALSE;
 
   /* Initialize socket list */
   InitializeCriticalSection(&critical);
@@ -118,26 +132,40 @@ int GSocket_Init(void)
   }
   firstAvailable = 0;
 
-  /* Initialize WinSocket */
-  return (WSAStartup((1 << 8) | 1, &wsaData) == 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;
 }
 
-void GSocket_Cleanup(void)
+void _GSocket_GUI_Cleanup(void)
 {
   /* Destroy internal window */
   DestroyWindow(hWin);
   UnregisterClass(CLASSNAME, INSTANCE);
 
+  /* Unlock wsock32.dll */
+  if (gs_wsock32dll)
+  {
+      FreeLibrary(gs_wsock32dll);
+      gs_wsock32dll = 0;
+  }
+
   /* Delete critical section */
   DeleteCriticalSection(&critical);
-
-  /* Cleanup WinSocket */
-  WSACleanup();
 }
 
 /* Per-socket GUI initialization / cleanup */
 
-int _GSocket_GUI_Init(GSocket *socket)
+int _GSocket_GUI_Init_Socket(GSocket *socket)
 {
   int i;
 
@@ -164,7 +192,7 @@ int _GSocket_GUI_Init(GSocket *socket)
   return TRUE;
 }
 
-void _GSocket_GUI_Destroy(GSocket *socket)
+void _GSocket_GUI_Destroy_Socket(GSocket *socket)
 {
   /* Remove the socket from the list */
   EnterCriticalSection(&critical);
@@ -260,7 +288,7 @@ 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);
   }
 }
 
@@ -273,7 +301,7 @@ 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);
   }
 }