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Error in QT: undefined reference to ` widget:: settime()‘

2022-04-22 06:04:00 【*wj】

Problem description ： QT It appears that error: undefined reference to `Widget::SetTime()'：

Cause analysis ：

Because we only declare the function in the header file , Not in the corresponding （XXX.C） The following file implements the function ：

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Solution ：

In the corresponding .c The function can be implemented below the file ：
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https://yzsam.com/2022/04/202204220541420286.html

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