You can use Layered Windows: Using a layered window can significantly improve performance and visual effects for a window that has a complex shape, animates its shape, or wishes to use alpha blending effects. The system automatically composes and repaints layered windows and the windows of underlying applications. As a result, layered windows are rendered … Read more
This is going to require another form that you display on top of the existing one. Its Opacity property can create the intended effect. Add a new class to your project and paste the code shown below. Call the Close() method to remove the effect again. using System; using System.Drawing; using System.Windows.Forms; using System.Runtime.InteropServices; class … Read more
Add the following style in your res/values/styles.xml file (if you don’t have one, create it.) Here’s a complete file: <?xml version=”1.0″ encoding=”utf-8″?> <resources> <style name=”Theme.Transparent” parent=”android:Theme”> <item name=”android:windowIsTranslucent”>true</item> <item name=”android:windowBackground”>@android:color/transparent</item> <item name=”android:windowContentOverlay”>@null</item> <item name=”android:windowNoTitle”>true</item> <item name=”android:windowIsFloating”>true</item> <item name=”android:backgroundDimEnabled”>false</item> </style> </resources> (The value @color/transparent is the color value #00000000 which I put in the res/values/color.xml file. … Read more