bug fix for logo not shown on start

Changelog.md

@@ -4,11 +4,11 @@
 - bug fix for logo not shown on start
 - osd-visibility.js script was removed because the OSC uses too much memory
 - youtube-dl was updated
-- in case mpv.net is started from a terminal it sets now the mpv property input-terminal to yes,
-  this means mpv.net will now receive input keys from the terminal
-- command line processing was improved, certain properties didn't work, now they should work:
-  (input-terminal, terminal, input-file, config, config-dir, input-conf,
-  load-scripts, script, scripts, player-operation-mode)
+- libmpv was updated to shinchiro 2019-08-04
+- in case mpv.net was started from a terminal it sets now the mpv property input-terminal to yes,
+  this means mpv.net will now receive and handle input keys from the terminal
+- certain command line properties didn't work (input-terminal, terminal, input-file,
+  config, config-dir, input-conf, load-scripts, script, scripts, player-operation-mode)
 - the about dialog shows now the mpv version and build date
 
 ### 5.1

mpv.net/Misc/Program.cs

@@ -18,6 +18,8 @@ namespace mpvnet
                 Application.EnableVisualStyles();
                 Application.SetCompatibleTextRenderingDefault(false);
 
+                if (mp.ConfigFolder == "") return;
+
                 string[] args = Environment.GetCommandLineArgs().Skip(1).ToArray();
 
                 if (args.Length == 2 && args[0] == "--reg-file-assoc")

mpv.net/Native/TaskDialog.cs

@@ -359,7 +359,7 @@ public class TaskDialog<T> : TaskDialogNative, IDisposable
     public void AddCommandLink(string text, T value)
     {
         int n = 1000 + IdValueDic.Count + 1;
-        IdValueDic[n] = value == null ? (T)(object)text : value;
+        IdValueDic[n] = value;
         IdTextDic[n] = text;
         Buttons.Add(new TaskDialogNative.TASKDIALOG_BUTTON(n, text));
         Config.dwFlags |= TaskDialogNative.TASKDIALOG_FLAGS.TDF_USE_COMMAND_LINKS;

mpv.net/WinForms/MainForm.cs

@@ -83,7 +83,6 @@ namespace mpvnet
 
                 if (mp.GPUAPI != "vulkan") mp.VideoSizeAutoResetEvent.WaitOne(App.StartThreshold);
                 if (Height < FontHeight * 4) SetFormPosAndSize();
-                if (mp.get_property_int("playlist-count") == 0) mp.ShowLogo();
             }
             catch (Exception ex)
             {
@@ -508,6 +507,12 @@ namespace mpvnet
             }));
         }
 
+        protected override void OnLoad(EventArgs e)
+        {
+            base.OnLoad(e);
+            if (mp.get_property_int("playlist-count") == 0) mp.ShowLogo();
+        }
+
         protected override void OnShown(EventArgs e)
         {
             base.OnShown(e);

mpv.net/mpv/mp.cs

@@ -166,10 +166,15 @@ namespace mpvnet
                             td.AddCommandLink(@"AppData\Roaming\mpv", appdataFolderMpv, appdataFolderMpv);
                             td.AddCommandLink("<startup>\\portable_config", portableFolder, portableFolder);
                             td.AddCommandLink("Choose custom folder", "custom");
-                            td.AllowCancel = false;
                             _ConfigFolder = td.Show();
                         }
 
+                        if (_ConfigFolder == null)
+                        {
+                            _ConfigFolder = "";
+                            return "";
+                        }
+
                         if (_ConfigFolder == "custom")
                         {
                             using (var d = new WinForms.FolderBrowserDialog())