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mfc常见问题集
mfc的常见问题集(mfc Frequently Asked Questions)
- 2004-09-03 20:49:45下载
- 积分：1
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mhjl
在科学技术、经济管理中常常要按一定的标准（相似程度或亲疏关系）进行分类。例如，根据生物的某些性状可对生物分类，根据土壤的性质可对土壤分类等。对所研究的事物按一定标准进行分类的数学方法称为聚类分析，它是多元统计“物以类聚”的一种分类方法。由于科学技术、经济管理中的分类界限往往不分明，因此采用模糊聚类方法通常比较符合实际。(In science and technology, economic management, often according to certain criteria (similarity or closeness) classification. For example, according to some biological traits may be of biological classification, according to the nature of the soil on soil classification can be. Studies on the classification of things according to certain standards of mathematics known as cluster analysis, it is a multi-Statistics " Like attracts like" a classification. As science and technology, economic management in the classification boundaries are often not clear, so the fuzzy clustering methods are usually more realistic.)
- 2010-08-22 20:58:51下载
- 积分：1
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bnch_blt
Bit Block Transfer test
- 2005-06-03 16:07:08下载
- 积分：1
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WIN32API
win32编程中常用的API，对于学些WIN32编程非常有用(win32 programm API datasheet, it is very useful for developer of win32)
- 2010-02-10 00:03:04下载
- 积分：1
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ZNodes
说明： qt中提供了QGphicsView，QGraphicsScene，QGraphicsItem，QGraphicsPixmapItem是QGraphicsItem的子类
分辨创建它们的实例：view，scene，item，然后通过各自的方法scene->addItem(item);view->setScene(scene);就可以达到类似下图的效果，想要进一步定制，则要继承QGraphicsItem或QGraphicsPixmapItem，然后重写paint()、boundingRect()等方法，此外如果还想要获取鼠标事件，重写mousePressEvent等事件就好了，注意，一旦重写了mousePressEvent方法，就以为了qt不会再自动处理item的任何press事件了，可以在你重写的mousePressEvent方法中最后添加QGraphicsItem::mousePressEvent(event);解决这个问题，就是说你获取到了鼠标事件，但是依然让qt处理这个鼠标事件。(QGphics View, QGraphics Scene, QGraphics Item and QGraphics PixmapItem are provided in qt. They are subclasses of QGraphics Item.
Resolve the instances of creating them: view, scene, item, and then use their respective methods scene - > addItem (item); view - > setScene (scene); you can achieve the effect similar to the figure below. If you want to further customize, you need to inherit QGraphics Item or QGraphics Pixmap Item, and then rewrite paint (), boundingRect () and other methods, and if you want to do so. If you want to get mouse events, rewrite events like mousePressEvent. Note that once you rewrite the mousePressEvent method, you think that QT will no longer automatically handle any press events of item. You can finally add QGraphics Item:: mousePressEvent (event) to your rewritten mousePressEvent method to solve this problem. That is, you get the mouse event, but still let QT handle the mouse event.)
- 2020-06-16 20:20:01下载
- 积分：1
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FIREDLL
使用windows Hook，监视IE或其他浏览器的地址栏，发现有www或http字样的，则更改这些url，使之不能访问相应的url(IEwindows HookIEwindows)
- 2015-05-27 18:47:08下载
- 积分：1
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xmsswifiqd
vc书籍。入门级教学，用于引导新手。用于自学。(vc books. Entry-level teaching, to guide novice. For self-study.)
- 2014-05-25 08:17:35下载
- 积分：1
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悬浮球+sinD
说明： 风洞悬浮球程序
本程序来源于正点原子例程
芯片为STM32F103ZET6
超声波测距模块SR04
ILI9341主控的320*240液晶屏
程序使用超声波测距模块SR04测量透明亚克力管子内风洞悬浮乒乓球的位置，
输出给ILI9341主控的320*240液晶屏上，在屏幕上画出球的位置曲线。
可通过串口1输入修改PID参数以及悬浮球目标位置(Translate by GOOGLE from Chinese
Wind tunnel suspension ball program
This program is derived from the punctual atomic routine
The chip is STM32F103ZET6
Ultrasonic ranging module SR04
320 * 240 LCD screen controlled by ILI9341
The program uses the ultrasonic ranging module SR04 to measure the position of suspended table tennis in a wind tunnel in a transparent acrylic tube.
Output the position to the LCD screen with 320 * 240 resolution, and draw the position curve of the ball on the screen.
Can modify PID parameters and hoverball target position through serial port 1 input)
- 2020-01-02 09:24:10下载
- 积分：1
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stm32按键
实现stm32案件实验.实现stm32案件实验.实现stm32案件实验.实现stm32案件实验.实现stm32案件实验.实现stm32案件实验.实现stm32案件实验.实现stm32案件实验.实现stm32案件实验.实现stm32案件实验.
- 2022-08-05 13:10:49下载
- 积分：1
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2015全国大学生电子设计竞赛风力摆
脉冲宽度调制是一种模拟控制方式，根据相应载荷的变化来调制晶体管基极或MOS管栅极的偏置，来实现晶体管或MOS管导通时间的改变，从而实现开关稳压电源输出的改变。这种方式能使电源的输出电压在工作条件变化时保持恒定，是利用微处理器的数字信号对模拟电路进行控制的一种非常有效的技术。脉冲宽度调制是利用微处理器的数字输出来对模拟电路进行控制的一种非常有效的技术，广泛应用在从测量、通信到功率控制与变换的许多领域中。(Pulse width modulation (PWM) is an analog control method, which modulates the bias of transistor base or MOS gate according to the change of load, so as to change the turn-on time of transistor or MOS and realize the change of output of switching regulated power supply. This method can keep the output voltage of the power supply constant when the working conditions change. It is a very effective technology to control the analog circuit by using the digital signal of the microprocessor. Pulse width modulation (PWM) is a very effective technology to control analog circuits by using the digital output of microprocessors. It is widely used in many fields, from measurement, communication to power control and conversion.)
- 2020-06-22 16:20:02下载
- 积分：1
