minor change.

Signed-off-by: liuyanghejerry <liuyanghejerry@126.com>
Merge branch '0.5' of github.com:liuyanghejerry/painttyWidget into 0.5
精简快捷键注册。

Signed-off-by: liuyanghejerry <liuyanghejerry@126.com>
进一步精简快捷键相关代码;
暂时停用吸管的图标

Signed-off-by: liuyanghejerry <liuyanghejerry@126.com>
将单键快捷键也进行精简化。

Signed-off-by: liuyanghejerry <liuyanghejerry@126.com>