最近我和老公怀孕了,准备要二胎。第一个孩子是四年前出生的,现在身开发者_运维问答体已经恢复的差不多了,所以打算要第二个孩子。因为第一个孩子是女儿,我和老公计划第二个孩子生男孩,但是不知道有什么方法可以
I have a grid control which has two child elements (both are canvas), and firs开发者_开发知识库t canvas overlays the second one. How can I handle mouse down event on background canvas?Without any more