new splash screen logo file (with transparency), new splash screen drawing method

Vocaluxe/Program.cs

@@ -192,6 +192,8 @@ namespace Vocaluxe
 
     class SplashScreen : Form
     {
+        Bitmap logo;
+
         public SplashScreen()
         {
             string path = Path.Combine(Environment.CurrentDirectory, Path.Combine(CSettings.sFolderGraphics, CSettings.sLogo));
@@ -199,9 +201,8 @@ namespace Vocaluxe
             {
                 try
                 {
-                    Bitmap logo = new Bitmap(path);
+                    logo = new Bitmap(path);
                     this.ClientSize = new Size(logo.Width, logo.Height);
-                    this.BackgroundImage = logo;
                 }
                 catch (Exception e)
                 {
@@ -230,8 +231,20 @@ namespace Vocaluxe
             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;         
             this.Text = CSettings.sProgramName;
             this.CenterToScreen();
-            this.TransparencyKey = this.BackColor; //thx to Klafhor :>
             this.Show();
         }
+    
+        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
+        {
+        }
+
+        protected override void OnPaintBackground(System.Windows.Forms.PaintEventArgs e)
+        {
+            if (logo == null)
+                return;
+
+            Graphics g = e.Graphics;
+            g.DrawImage(logo, new Rectangle(0, 0, this.Width, this.Height));
+        }
     }
 }