1. some more tests in console

2. added wxFileType::GetOpenCommand() demo in the exec sample
3. "fixed" the error messages from wxExecute() - still no idea why it happens
   though :-(


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8588 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/console/console.cpp

@@ -1134,6 +1134,39 @@ static void TestRegistryRead()
     }
 }
 
+static void TestRegistryAssociation()
+{
+    /*
+       The second call to deleteself genertaes an error message, with a
+       messagebox saying .flo is crucial to system operation, while the .ddf
+       call also fails, but with no error message
+    */
+
+    wxRegKey key;
+
+    key.SetName("HKEY_CLASSES_ROOT\\.ddf" );
+    key.Create();
+    key = "ddxf_auto_file" ;
+    key.SetName("HKEY_CLASSES_ROOT\\.flo" );
+    key.Create();
+    key = "ddxf_auto_file" ;
+    key.SetName("HKEY_CLASSES_ROOT\\ddxf_auto_file\\DefaultIcon");
+    key.Create();
+    key = "program,0" ;
+    key.SetName("HKEY_CLASSES_ROOT\\ddxf_auto_file\\shell\\open\\command");
+    key.Create();
+    key = "program \"%1\"" ;
+
+    key.SetName("HKEY_CLASSES_ROOT\\.ddf" );
+    key.DeleteSelf();
+    key.SetName("HKEY_CLASSES_ROOT\\.flo" );
+    key.DeleteSelf();
+    key.SetName("HKEY_CLASSES_ROOT\\ddxf_auto_file\\DefaultIcon");
+    key.DeleteSelf();
+    key.SetName("HKEY_CLASSES_ROOT\\ddxf_auto_file\\shell\\open\\command");
+    key.DeleteSelf();
+}
+
 #endif // TEST_REGISTRY
 
 // ----------------------------------------------------------------------------
@@ -3695,7 +3728,9 @@ int main(int argc, char **argv)
 #endif // TEST_INFO_FUNCTIONS
 
 #ifdef TEST_REGISTRY
-    TestRegistryRead();
+    if ( 0 )
+        TestRegistryRead();
+    TestRegistryAssociation();
 #endif // TEST_REGISTRY
 
 #ifdef TEST_SOCKETS

samples/exec/exec.cpp

@@ -45,6 +45,8 @@
 
 #include "wx/process.h"
 
+#include "wx/mimetype.h"
+
 #ifdef __WINDOWS__
     #include "wx/dde.h"
 #endif // __WINDOWS__
@@ -88,6 +90,8 @@ public:
     void OnExecWithRedirect(wxCommandEvent& event);
     void OnExecWithPipe(wxCommandEvent& event);
 
+    void OnFileExec(wxCommandEvent& event);
+
     void OnDDEExec(wxCommandEvent& event);
 
     void OnAbout(wxCommandEvent& event);
@@ -104,6 +108,8 @@ private:
                     const wxArrayString& output,
                     const wxString& title);
 
+    void DoAsyncExec(const wxString& cmd);
+
     wxString m_cmdLast;
 
     wxListBox *m_lbox;
@@ -178,6 +184,7 @@ enum
     Exec_SyncExec = 200,
     Exec_AsyncExec,
     Exec_Shell,
+    Exec_OpenFile,
     Exec_DDEExec,
     Exec_Redirect,
     Exec_Pipe,
@@ -203,6 +210,8 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
     EVT_MENU(Exec_Redirect, MyFrame::OnExecWithRedirect)
     EVT_MENU(Exec_Pipe, MyFrame::OnExecWithPipe)
 
+    EVT_MENU(Exec_OpenFile, MyFrame::OnFileExec)
+
     EVT_MENU(Exec_DDEExec, MyFrame::OnDDEExec)
 
     EVT_MENU(Exec_About, MyFrame::OnAbout)
@@ -276,6 +285,9 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
     execMenu->Append(Exec_Pipe, _T("&Pipe through command...\tCtrl-P"),
                      _T("Pipe a string through a filter"));
 
+    execMenu->AppendSeparator();
+    execMenu->Append(Exec_OpenFile, _T("Open &file...\tCtrl-F"),
+                     _T("Launch the command to open this kind of files"));
 #ifdef __WINDOWS__
     execMenu->AppendSeparator();
     execMenu->Append(Exec_DDEExec, _T("Execute command via &DDE...\tCtrl-D"));
@@ -323,6 +335,24 @@ void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
                  _T("About Exec"), wxOK | wxICON_INFORMATION, this);
 }
 
+void MyFrame::DoAsyncExec(const wxString& cmd)
+{
+    wxProcess *process = new MyProcess(this, cmd);
+    long pid = wxExecute(cmd, FALSE /* async */, process);
+    if ( !pid )
+    {
+        wxLogError(_T("Execution of '%s' failed."), cmd.c_str());
+
+        delete process;
+    }
+    else
+    {
+        wxLogStatus(_T("Process %ld (%s) launched."), pid, cmd.c_str());
+
+        m_cmdLast = cmd;
+    }
+}
+
 void MyFrame::OnSyncExec(wxCommandEvent& WXUNUSED(event))
 {
     wxString cmd = wxGetTextFromUser(_T("Enter the command: "),
@@ -350,20 +380,7 @@ void MyFrame::OnAsyncExec(wxCommandEvent& WXUNUSED(event))
     if ( !cmd )
         return;
 
-    wxProcess *process = new MyProcess(this, cmd);
+    DoAsyncExec(cmd);
-    long pid = wxExecute(cmd, FALSE /* async */, process);
-    if ( !pid )
-    {
-        wxLogError(_T("Execution of '%s' failed."), cmd.c_str());
-
-        delete process;
-    }
-    else
-    {
-        wxLogStatus(_T("Process %ld (%s) launched."), pid, cmd.c_str());
-
-        m_cmdLast = cmd;
-    }
 }
 
 void MyFrame::OnShell(wxCommandEvent& WXUNUSED(event))
@@ -474,6 +491,39 @@ void MyFrame::OnExecWithPipe(wxCommandEvent& WXUNUSED(event))
     m_cmdLast = cmd;
 }
 
+void MyFrame::OnFileExec(wxCommandEvent& event)
+{
+    static wxString s_filename;
+
+    wxString filename = wxLoadFileSelector(_T("file"), _T(""), s_filename);
+    if ( !filename )
+        return;
+
+    s_filename = filename;
+
+    wxString ext = filename.AfterFirst(_T('.'));
+    wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension(ext);
+    if ( !ft )
+    {
+        wxLogError(_T("Impossible to determine the file type for extension '%s'"),
+                   ext.c_str());
+        return;
+    }
+
+    wxString cmd;
+    bool ok = ft->GetOpenCommand(&cmd,
+                                 wxFileType::MessageParameters(filename, _T("")));
+    delete ft;
+    if ( !ok )
+    {
+        wxLogError(_T("Impossible to find out how to open files of extension '%s'"),
+                   ext.c_str());
+        return;
+    }
+
+    DoAsyncExec(cmd);
+}
+
 void MyFrame::OnDDEExec(wxCommandEvent& WXUNUSED(event))
 {
 #ifdef __WINDOWS__

src/msw/dde.cpp

@@ -530,6 +530,7 @@ bool wxDDEConnection::Execute(const wxChar *data, int size, wxIPCFormat format)
                                     XTYP_EXECUTE,
                                     DDE_TIMEOUT,
                                     &result) != 0;
+
     if ( !ok )
     {
         DDELogError(_T("DDE execute request failed"));

src/msw/utilsexc.cpp

@@ -320,6 +320,7 @@ long wxExecute(const wxString& cmd, bool sync, wxProcess *handler)
     wxCHECK_MSG( !!cmd, 0, wxT("empty command in wxExecute") );
 
     wxString command;
+
 #if wxUSE_IPC
     // DDE hack: this is really not pretty, but we need to allow this for
     // transparent handling of DDE servers in wxMimeTypesManager. Usually it
@@ -327,7 +328,7 @@ long wxExecute(const wxString& cmd, bool sync, wxProcess *handler)
     // given type. Sometimes, however, this command just launches the server
     // and an additional DDE request must be made to really open the file. To
     // keep all this well hidden from the application, we allow a special form
-    // of command: WX_DDE:<command>:DDE_SERVER:DDE_TOPIC:DDE_COMMAND in which
+    // of command: WX_DDE#<command>#DDE_SERVER#DDE_TOPIC#DDE_COMMAND in which
     // case we execute just <command> and process the rest below
     wxString ddeServer, ddeTopic, ddeCommand;
     static const size_t lenDdePrefix = 7;   // strlen("WX_DDE:")
@@ -383,6 +384,28 @@ long wxExecute(const wxString& cmd, bool sync, wxProcess *handler)
         {
             ddeCommand += *p++;
         }
+
+        // maybe we don't have to launch the DDE server at all - if it is
+        // already running, for example
+        wxDDEClient client;
+        wxLogNull nolog;
+        wxConnectionBase *conn = client.MakeConnection(_T(""),
+                                                       ddeServer,
+                                                       ddeTopic);
+        if ( conn )
+        {
+            // FIXME we don't check the return code as for some strange reason
+            //       it will sometimes be FALSE - it is probably a bug in our
+            //       DDE code but I don't see anything wrong there
+            (void)conn->Execute(ddeCommand);
+
+            // ok, the command executed - return value indicating success,
+            // making it up for async case as we really don't have any way to
+            // get the real PID of the DDE server here
+            return sync ? 0 : -1;
+        }
+        //else: couldn't establish DDE conversation, now try launching the app
+        //      and sending the DDE request again
     }
     else
 #endif // wxUSE_IPC
@@ -617,12 +640,37 @@ long wxExecute(const wxString& cmd, bool sync, wxProcess *handler)
     if ( !!ddeServer )
     {
         wxDDEClient client;
-        wxConnectionBase *conn = client.MakeConnection(_T(""),
+        wxConnectionBase *conn;
-                                                       ddeServer,
+
-                                                       ddeTopic);
-        if ( !conn || !conn->Execute(ddeCommand) )
         {
-            wxLogError(_("Couldn't launch DDE server '%s'."), command.c_str());
+            // try doing it the first time without error messages
+            wxLogNull nolog;
+
+            conn = client.MakeConnection(_T(""), ddeServer, ddeTopic);
+        }
+
+        if ( !conn )
+        {
+            // give the app some time to initialize itself: in fact, a common
+            // reason for failure is that we tried to open DDE conversation too
+            // soon (before the app had time to setup its DDE server), so wait
+            // a bit and try again
+            ::Sleep(2000);
+
+            wxConnectionBase *conn = client.MakeConnection(_T(""),
+                                                           ddeServer,
+                                                           ddeTopic);
+            if ( !conn )
+            {
+                wxLogError(_("Couldn't launch DDE server '%s'."), command.c_str());
+            }
+        }
+
+        if ( conn )
+        {
+            // FIXME just as above we don't check Execute() return code
+            wxLogNull nolog;
+            (void)conn->Execute(ddeCommand);
         }
     }
 #endif // wxUSE_IPC