🐛 Bug fixes and minor improvements

- Selection tool: Add center grip
- Fix: App hangs if all files are broken in an opened folder
- Fix: You can drag an image from the app if no image opened

quick-picture-viewer/App.config

@@ -6,7 +6,7 @@
         </sectionGroup>
     </configSections>
     <System.Windows.Forms.ApplicationConfigurationSection>
-        <add key="DpiAwareness" value="PerMonitorV2" />
+        <add key="DpiAwareness" value="PerMonitorV2"/>
     </System.Windows.Forms.ApplicationConfigurationSection>
     <startup> 
         <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8"/>

quick-picture-viewer/bin/Release/quick-picture-viewer.exe.config

@@ -6,7 +6,7 @@
         </sectionGroup>
     </configSections>
     <System.Windows.Forms.ApplicationConfigurationSection>
-        <add key="DpiAwareness" value="PerMonitorV2" />
+        <add key="DpiAwareness" value="PerMonitorV2"/>
     </System.Windows.Forms.ApplicationConfigurationSection>
     <startup> 
         <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8"/>

quick-picture-viewer/AboutForm.cs → quick-picture-viewer/forms/AboutForm.cs

@@ -1,75 +1,75 @@
-using QuickLibrary;
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Reflection;
-using System.Windows.Forms;
-
-namespace quick_picture_viewer
-{
-	partial class AboutForm : QlibFixedForm
-	{
-		public AboutForm()
-		{
-			InitializeComponent();
-			SetDraggableControls(new List<Control>() { logoPictureBox, productLabel, versionLabel, copyrightLabel });
-
-			closeBtn.DarkMode = false;
-
-			string fullVer = Assembly.GetExecutingAssembly().GetName().Version.ToString();
-			int lastDotIndex = fullVer.LastIndexOf('.');
-			versionLabel.Text = String.Format("v{0}", fullVer.Substring(0, lastDotIndex));
-
-			if (IntPtr.Size == 4) versionLabel.Text += " (x32)";
-			else if (IntPtr.Size == 8) versionLabel.Text += " (x64)";
-
-			if (ThemeMan.isWindows10()) makeDefaultBtn.Enabled = true;
-		}
-
-		protected override void OnHandleCreated(EventArgs e)
-		{
-			ThemeMan.ApplyDarkTitlebar(Handle, DarkMode);
-			base.OnHandleCreated(e);
-		}
-
-		private void closeBtn_Click(object sender, EventArgs e)
-		{
-			Close();
-		}
-
-		private void AboutForm_Load(object sender, EventArgs e)
-		{
-			InitLanguage();
-		}
-
-		private void InitLanguage()
-		{
-			Text = LangMan.Get("about");
-			updatesBtn.Text = " " + LangMan.Get("check-for-app-updates");
-			descTextBox.Text = LangMan.Get("app-description");
-			makeDefaultBtn.Text = LangMan.Get("set-as-default-image-viewer");
-			infoTooltip.SetToolTip(closeBtn, NativeMan.GetMessageBoxText(NativeMan.DialogBoxCommandID.IDCLOSE) + " | Alt+F4");
-		}
-
-		private void makeDefaultBtn_Click(object sender, EventArgs e)
-		{
-			Process.Start("ms-settings:defaultapps");
-		}
-
-		private void updatesBtn_Click(object sender, EventArgs e)
-		{
-			UpdateMan.CheckForUpdates(true, TopMost, Owner.Handle);
-			Close();
-		}
-
-		private void button1_Click(object sender, EventArgs e)
-		{
-			Process.Start("https://github.com/ModuleArt/quick-picture-viewer/");
-		}
-
-		private void developerBtn_Click(object sender, EventArgs e)
-		{
-			Process.Start("https://moduleart.github.io");
-		}
-	}
-}
+using QuickLibrary;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Reflection;
+using System.Windows.Forms;
+
+namespace quick_picture_viewer
+{
+	partial class AboutForm : QlibFixedForm
+	{
+		public AboutForm()
+		{
+			InitializeComponent();
+			SetDraggableControls(new List<Control>() { logoPictureBox, productLabel, versionLabel, copyrightLabel });
+
+			closeBtn.DarkMode = false;
+
+			string fullVer = Assembly.GetExecutingAssembly().GetName().Version.ToString();
+			int lastDotIndex = fullVer.LastIndexOf('.');
+			versionLabel.Text = String.Format("v{0}", fullVer.Substring(0, lastDotIndex));
+
+			if (IntPtr.Size == 4) versionLabel.Text += " (x32)";
+			else if (IntPtr.Size == 8) versionLabel.Text += " (x64)";
+
+			if (ThemeMan.isWindows10()) makeDefaultBtn.Enabled = true;
+		}
+
+		protected override void OnHandleCreated(EventArgs e)
+		{
+			ThemeMan.ApplyDarkTitlebar(Handle, DarkMode);
+			base.OnHandleCreated(e);
+		}
+
+		private void closeBtn_Click(object sender, EventArgs e)
+		{
+			Close();
+		}
+
+		private void AboutForm_Load(object sender, EventArgs e)
+		{
+			InitLanguage();
+		}
+
+		private void InitLanguage()
+		{
+			Text = LangMan.Get("about");
+			updatesBtn.Text = " " + LangMan.Get("check-for-app-updates");
+			descTextBox.Text = LangMan.Get("app-description");
+			makeDefaultBtn.Text = LangMan.Get("set-as-default-image-viewer");
+			infoTooltip.SetToolTip(closeBtn, NativeMan.GetMessageBoxText(NativeMan.DialogBoxCommandID.IDCLOSE) + " | Alt+F4");
+		}
+
+		private void makeDefaultBtn_Click(object sender, EventArgs e)
+		{
+			Process.Start("ms-settings:defaultapps");
+		}
+
+		private void updatesBtn_Click(object sender, EventArgs e)
+		{
+			UpdateMan.CheckForUpdates(true, TopMost, Owner.Handle);
+			Close();
+		}
+
+		private void button1_Click(object sender, EventArgs e)
+		{
+			Process.Start("https://github.com/ModuleArt/quick-picture-viewer/");
+		}
+
+		private void developerBtn_Click(object sender, EventArgs e)
+		{
+			Process.Start("https://moduleart.github.io");
+		}
+	}
+}