I know that there is an InvalidateRect setting area in onpaint, but if you can only draw on CClientDC directly when clicking on the function, how to set the drawing update area ...
in MFC development, how to switch tabControl pages with a button? for example, in C-sharp, you can click the button to switch pages by adding the following statement to the button: this.tabControl1.SelectedIndex = 2; but only these two attributes ...
in MFC development, how to change the picture content of pictureBox by clicking a button? this property in pictureBOX: how to add code to the button to make pictureBOX load another picture when you click the button, thank you! ...
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you need to code to achieve hard trigger, but the sample in pylon only finds software trigger examples. According to the above tips, you have implemented hardware trigger, but the actual test cannot be triggered. I know it is a code problem, but ther...
Can I choose instead? https: jsfiddle.net api post....
through consulting materials, it is found that there are two main ways to download JS files on the Internet: 1. Using the downLoad attribute of the a tag, through URL.createObjectURL () 2. Use the file system FileSystem, to download the files to sandb...
for example, I have a page: Why is this? ...
for some reasons, properties like data-url= " " need to be rendered, but there is a red wavy line prompt in idea. Although it can be run, it looks very awkward. Can you set it without prompt? Thank you! use version: idea 2017.3, thymeleaf 3 ...
how to add correspondence between two models for example, the following two classes: from django.db import models class Question(models.Model): class Meta: verbose_name = verbose_name_plural = question_text = models....