US Patent 9760256 Securing a window system supporting transparency

According to an aspect, a computing device may include a window system configured to receive window region information and transparency information for a window rendered from an application. The transparency information may indicate that transparency is enabled for the window. The window region information may define a region within the window. The window system may be configured to modify an original frame of the window to create a modified frame based on the window region information and the transparency information such that the region within the window for the modified frame meets a threshold level of transparency. The computing device may include a graphical user interface configured to provide a display of the window with the modified frame.