Focus handling fixes and improvements in case a window appears/disappears. More code cleanup and documentation.
Focus handling fixes and improvements in case a window appears/disappears.
More code cleanup and documentation.

lancebaiyouview/DirectFB,mtsekm/test,kevleyski/directfb,dfbdok/DirectFB1,mtsekm/test,kevleyski/DirectFB-1,deniskropp/DirectFB,kevleyski/DirectFB-1,lancebaiyouview/DirectFB,kevleyski/DirectFB-1,DirectFB/directfb,DirectFB/directfb,djbclark/directfb-core-DirectFB,Distrotech/DirectFB,kevleyski/directfb,kevleyski/directfb,kaostao/directfb,djbclark/directfb-core-DirectFB,DirectFB/directfb,sklnet/DirectFB,lancebaiyouview/DirectFB,dfbdok/DirectFB1,kevleyski/DirectFB-1,deniskropp/DirectFB,sklnet/DirectFB,jcdubois/DirectFB,Distrotech/DirectFB,sklnet/DirectFB,deniskropp/DirectFB,sklnet/DirectFB,kevleyski/directfb,deniskropp/DirectFB,jcdubois/DirectFB,Distrotech/DirectFB,dfbdok/DirectFB1,lancebaiyouview/DirectFB,kaostao/directfb,djbclark/directfb-core-DirectFB,djbclark/directfb-core-DirectFB,jcdubois/DirectFB,mtsekm/test,kaostao/directfb