SaWMan: Fix for send_button_event() with input only windows.
SaWMan: Fix for send_button_event() with input only windows.

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