How to resolve event-not response in C + + _c language
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞
In the C + + development process for such reasons, you can click on the menu, right-click the menu does not respond to the problem, or click a menu, but the response is the B menu. When you encounter the above problems, you can analyze from the following aspects, generally can solve the problem. Here are four ways to solve the problem:
1, check the menu ID for the event mapping table exists , if not exist will not respond to
2, check the menu ID and other menu ID is duplicated , if there is duplication may appear confusedly phenomenon (click a menu, but respond to the behavior of the B menu)
3, the menu ID and the corresponding Menu event mapping table ID is consistent , may appear the menu ID and event map ID inconsistent
4. In QT, notice whether the signal function forgets to write parentheses :
Connect (underbtn,signal (clicked ()), This,slot (Slotunder ()));
If the Slotunder function in slot (Slotunder ()) does not write parentheses, there is also an issue that cannot be answered by the event.
For the 4th, MFC, Wxwidgets will also appear similar problems
This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or
reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or
complaint, to email@example.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
and provide relevant evidence. A staff member will contact you within 5 working days.