]> git.saurik.com Git - wxWidgets.git/blobdiff - src/msw/utils.cpp
pointer returned by GetNativeFontInfo() is now const and must not be deleted (replace...
[wxWidgets.git] / src / msw / utils.cpp
index 4ba9ff2a28917149e8eeb0e7758b40a616edd212..8e5fab3265946128366d2883f4c772c9b9732d0c 100644 (file)
 #endif  //WX_PRECOMP
 
 #include "wx/apptrait.h"
+#include "wx/dynload.h"
 
 #include "wx/msw/private.h"     // includes <windows.h>
 #include "wx/msw/missing.h"     // CHARSET_HANGUL
 
-#if defined(__GNUWIN32_OLD__) || defined(__WXWINCE__)
+#if defined(__GNUWIN32_OLD__) || defined(__WXWINCE__) \
+    || defined(__CYGWIN32__)
     // apparently we need to include winsock.h to get WSADATA and other stuff
     // used in wxGetFullHostName() with the old mingw32 versions
     #include <winsock.h>
@@ -143,52 +145,80 @@ bool wxGetHostName(wxChar *buf, int maxSize)
 // get full hostname (with domain name if possible)
 bool wxGetFullHostName(wxChar *buf, int maxSize)
 {
-#if defined(__WIN32__) && !defined(__WXMICROWIN__) && ! (defined(__GNUWIN32__) && !defined(__MINGW32__))
+#if !defined( __WXMICROWIN__) && wxUSE_DYNAMIC_LOADER
     // TODO should use GetComputerNameEx() when available
 
-    // the idea is that if someone had set wxUSE_SOCKETS to 0 the code
-    // shouldn't use winsock.dll (a.k.a. ws2_32.dll) at all so only use this
-    // code if we link with it anyhow
-#if wxUSE_SOCKETS
-    WSADATA wsa;
-    if ( WSAStartup(MAKEWORD(1, 1), &wsa) == 0 )
+    // we don't want to always link with Winsock DLL as we might not use it at
+    // all, so load it dynamically here if needed
+    wxDynamicLibrary dllWinsock(_T("ws2_32.dll"), wxDL_VERBATIM);
+    if ( dllWinsock.IsLoaded() )
     {
-        wxString host;
-        char bufA[256];
-        if ( gethostname(bufA, WXSIZEOF(bufA)) == 0 )
+        typedef int (PASCAL *WSAStartup_t)(WORD, WSADATA *);
+        typedef int (PASCAL *gethostname_t)(char *, int);
+        typedef hostent* (PASCAL *gethostbyname_t)(const char *);
+        typedef hostent* (PASCAL *gethostbyaddr_t)(const char *, int , int);
+        typedef int (PASCAL *WSACleanup_t)(void);
+
+        #define LOAD_WINSOCK_FUNC(func)                                       \
+            func ## _t                                                        \
+                pfn ## func = (func ## _t)dllWinsock.GetSymbol(_T(#func))
+
+        LOAD_WINSOCK_FUNC(WSAStartup);
+
+        WSADATA wsa;
+        if ( pfnWSAStartup && pfnWSAStartup(MAKEWORD(1, 1), &wsa) == 0 )
         {
-            // gethostname() won't usually include the DNS domain name, for
-            // this we need to work a bit more
-            if ( !strchr(bufA, '.') )
-            {
-                struct hostent *pHostEnt =  gethostbyname(bufA);
+            LOAD_WINSOCK_FUNC(gethostname);
 
-                if ( pHostEnt )
+            wxString host;
+            if ( pfngethostname )
+            {
+                char bufA[256];
+                if ( pfngethostname(bufA, WXSIZEOF(bufA)) == 0 )
                 {
-                    // Windows will use DNS internally now
-                    pHostEnt = gethostbyaddr(pHostEnt->h_addr, 4, AF_INET);
-                }
+                    // gethostname() won't usually include the DNS domain name,
+                    // for this we need to work a bit more
+                    if ( !strchr(bufA, '.') )
+                    {
+                        LOAD_WINSOCK_FUNC(gethostbyname);
 
-                if ( pHostEnt )
-                {
-                    host = wxString::FromAscii(pHostEnt->h_name);
+                        struct hostent *pHostEnt = pfngethostbyname
+                                                    ? pfngethostbyname(bufA)
+                                                    : NULL;
+
+                        if ( pHostEnt )
+                        {
+                            // Windows will use DNS internally now
+                            LOAD_WINSOCK_FUNC(gethostbyaddr);
+
+                            pHostEnt = pfngethostbyaddr
+                                        ? pfngethostbyaddr(pHostEnt->h_addr,
+                                                           4, AF_INET)
+                                        : NULL;
+                        }
+
+                        if ( pHostEnt )
+                        {
+                            host = wxString::FromAscii(pHostEnt->h_name);
+                        }
+                    }
                 }
             }
-        }
 
-        WSACleanup();
+            LOAD_WINSOCK_FUNC(WSACleanup);
+            if ( pfnWSACleanup )
+                pfnWSACleanup();
 
-        if ( !host.empty() )
-        {
-            wxStrncpy(buf, host, maxSize);
 
-            return TRUE;
+            if ( !host.empty() )
+            {
+                wxStrncpy(buf, host, maxSize);
+
+                return TRUE;
+            }
         }
     }
-
-#endif // wxUSE_SOCKETS
-
-#endif // Win32
+#endif // !__WXMICROWIN__
 
     return wxGetHostName(buf, maxSize);
 }
@@ -983,7 +1013,7 @@ wxString wxGetOsDescription()
 #endif // Win32/16
 }
 
-int wxAppTraits::GetOSVersion(int *verMaj, int *verMin)
+wxToolkitInfo& wxAppTraits::GetToolkitInfo()
 {
     // cache the version info, it's not going to change
     //
@@ -1022,17 +1052,17 @@ int wxAppTraits::GetOSVersion(int *verMaj, int *verMin)
                 case VER_PLATFORM_WIN32_CE:
                     s_ver = wxWINDOWS_CE;
                     break;
-#endif                    
+#endif
             }
         }
     }
 
-    if ( verMaj )
-        *verMaj = s_major;
-    if ( verMin )
-        *verMin = s_minor;
-
-    return s_ver;
+    static wxToolkitInfo info;
+    info.versionMajor = s_major;
+    info.versionMinor = s_minor;
+    info.os = s_ver;
+    info.name = _T("wxBase");
+    return info;
 }
 
 // ----------------------------------------------------------------------------
@@ -1202,3 +1232,62 @@ extern long wxCharsetToCodepage(const wxChar *name)
 
 #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
 
+/*
+  Creates a hidden window with supplied window proc registering the class for
+  it if necesssary (i.e. the first time only). Caller is responsible for
+  destroying the window and unregistering the class (note that this must be
+  done because wxWindows may be used as a DLL and so may be loaded/unloaded
+  multiple times into/from the same process so we cna't rely on automatic
+  Windows class unregistration).
+
+  pclassname is a pointer to a caller stored classname, which must initially be
+  NULL. classname is the desired wndclass classname. If function succesfully
+  registers the class, pclassname will be set to classname.
+ */
+extern "C" HWND
+wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc)
+{
+    wxCHECK_MSG( classname && pclassname && wndproc, NULL,
+                    _T("NULL parameter in wxCreateHiddenWindow") );
+
+    // register the class fi we need to first
+    if ( *pclassname == NULL )
+    {
+        WNDCLASS wndclass;
+        wxZeroMemory(wndclass);
+
+        wndclass.lpfnWndProc   = wndproc;
+        wndclass.hInstance     = wxGetInstance();
+        wndclass.lpszClassName = classname;
+
+        if ( !::RegisterClass(&wndclass) )
+        {
+            wxLogLastError(wxT("RegisterClass() in wxCreateHiddenWindow"));
+
+            return NULL;
+        }
+
+        *pclassname = classname;
+    }
+
+    // next create the window
+    HWND hwnd = ::CreateWindow
+                  (
+                    *pclassname,
+                    NULL,
+                    0, 0, 0, 0,
+                    0,
+                    (HWND) NULL,
+                    (HMENU)NULL,
+                    wxGetInstance(),
+                    (LPVOID) NULL
+                  );
+
+    if ( !hwnd )
+    {
+        wxLogLastError(wxT("CreateWindow() in wxCreateHiddenWindow"));
+    }
+
+    return hwnd;
+}
+