Fix for #11112: Brackets opens as a new instance, instead of using the existing running instance, if launched from command line without any arguments.

Author: nethip

appshell/cefclient_win.cpp

@@ -193,33 +193,35 @@ int APIENTRY wWinMain(HINSTANCE hInstance,
 
   // Determine if we should use an already running instance of Brackets.
   HANDLE hMutex = ::OpenMutex(MUTEX_ALL_ACCESS, FALSE, FIRST_INSTANCE_MUTEX_NAME);
-  if ((hMutex != NULL) && AppGetCommandLine()->HasArguments() && (lpCmdLine != NULL)) {
-   // for subsequent instances, re-use an already running instance if we're being called to
-   //   open an existing file on the command-line (eg. Open With.. from Windows Explorer)
-   HWND hFirstInstanceWnd = cef_main_window::FindFirstTopLevelInstance();
-   if (hFirstInstanceWnd != NULL) {
-     ::SetForegroundWindow(hFirstInstanceWnd);
-    if (::IsIconic(hFirstInstanceWnd))
-      ::ShowWindow(hFirstInstanceWnd, SW_RESTORE);
-
-      // message the other Brackets instance to actually open the given filename
-      std::wstring filename = lpCmdLine;
-      std::wstring wstrFilename;
-      // We check if this is a valid file path. If not just ignore this parameter.
-      if (GetFullPath(filename, wstrFilename)) {
-        ConvertToUnixPath(wstrFilename);
-        // note: WM_COPYDATA will manage passing the string across process space
-        COPYDATASTRUCT data;
-        data.dwData = ID_WM_COPYDATA_SENDOPENFILECOMMAND;
-        data.cbData = (wstrFilename.length() + 1) * sizeof(WCHAR);
-        data.lpData = (LPVOID)wstrFilename.c_str();
-        ::SendMessage(hFirstInstanceWnd, WM_COPYDATA, (WPARAM)(HWND)hFirstInstanceWnd, (LPARAM)(LPVOID)&data);
-        // exit this instance
-        return 0;
+  if (hMutex != NULL) {
+    // for subsequent instances, re-use an already running instance if we're being called to
+    //   open an existing file on the command-line (eg. Open With.. from Windows Explorer)
+    HWND hFirstInstanceWnd = cef_main_window::FindFirstTopLevelInstance();
+    if (hFirstInstanceWnd != NULL) {
+      ::SetForegroundWindow(hFirstInstanceWnd);
+      if (::IsIconic(hFirstInstanceWnd))
+        ::ShowWindow(hFirstInstanceWnd, SW_RESTORE);
+      // Check for arguments. If any pass it to the existing running instance.
+      if( AppGetCommandLine()->HasArguments() && (lpCmdLine != NULL) ){
+        // message the other Brackets instance to actually open the given filename
+        std::wstring filename = lpCmdLine;
+        std::wstring wstrFilename;
+        // We check if this is a valid file path. If not just ignore this parameter.
+        if (GetFullPath(filename, wstrFilename)) {
+          ConvertToUnixPath(wstrFilename);
+          // note: WM_COPYDATA will manage passing the string across process space
+          COPYDATASTRUCT data;
+          data.dwData = ID_WM_COPYDATA_SENDOPENFILECOMMAND;
+          data.cbData = (wstrFilename.length() + 1) * sizeof(WCHAR);
+          data.lpData = (LPVOID)wstrFilename.c_str();
+          ::SendMessage(hFirstInstanceWnd, WM_COPYDATA, (WPARAM)(HWND)hFirstInstanceWnd, (LPARAM)(LPVOID)&data);
+        }
       }
+      // exit this instance
+      return 0;
     }
     // otherwise, fall thru and launch a new instance
-  }
+ }
 
   if (hMutex == NULL) {
 	  // first instance of this app, so create the mutex and continue execution of this instance.