Launch the graphics application via a shell by using the UNIX system() api

svn path=/trunk/boinc/; revision=13491

checkin_notes

@@ -8164,7 +8164,7 @@ Rom    28 Aug 2007
         screensaver_win.cpp
 
 Charlie 28 Aug 2007
-    - Mac V2 GFX: Create same shmem file name as for Windows, instead of 
+    - Mac V6 GFX: Create same shmem file name as for Windows, instead of 
         "gfx_mmap_file". 
         Fix a compiler warning.
     - Mac: Move Mac screensaver files to common clientscr/ directory. 
@@ -8194,7 +8194,12 @@ Charlie 28 Aug 2007
             project.pbxproj
 
 Charlie 28 Aug 2007
-    - Mac V2 GFX: Fix link error when building example app.
+    - Mac V6 GFX: Fix link error when building example app.
+    - Mac MGR: Launch the graphics application via a shell by using 
+        the UNIX system() api.  This works around "RegisterProcess 
+        failed (error = -50)" when using fork() and execv().
     
     api/
         graphics2_unix.C
+    clientgui/
+        ViewWork.cpp

clientgui/ViewWork.cpp

@@ -233,6 +233,14 @@ void CViewWork::OnWorkShowGraphics( wxCommandEvent& WXUNUSED(event) ) {
     if (wxYES == iAnswer) {
         RESULT* result = pDoc->result(m_pListPane->GetFirstSelected());
         if (!result->graphics_exec_path.empty()) {
+#ifdef __WXMAC__
+            // Launching the graphics application using fork() and execv() 
+            // results in it getting "RegisterProcess failed (error = -50)"
+            // so we launch it via a shell using the system() api.
+            char cmd[1024];
+            sprintf(cmd, "cd \"%s\"; \"%s\" --graphics &", result->slot_path.c_str(), result->graphics_exec_path.c_str());
+            system(cmd);
+#else
             // V6 Graphics
             char* argv[2];
             argv[0] = "--graphics";
@@ -250,6 +258,7 @@ void CViewWork::OnWorkShowGraphics( wxCommandEvent& WXUNUSED(event) ) {
                 0,
                 id
             );
+#endif
         } else {
             // V5 and Older
 		    std::string strDefaultWindowStation = std::string((const char*)wxGetApp().m_strDefaultWindowStation.mb_str());