qt在window实现调取摄像头识别二维码条形码不会保存图片到本机多个摄像头可切换无摄像头不崩溃会提示

qt在window实现调取摄像头识别二维码条形码不会保存图片到本机多个摄像头可切换无摄像头不崩溃会提示

#include “MainWindow.h“
#include 

int main（int argc char *argv[]）
{
    QApplication a（argc argv）;
    MainWindow w;
    w.show（）;

    return a.exec（）;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件   18042949  2019-04-12 19:16  SmartMemory\%SystemDrive%\ProgramData\SogouInput\Components\Picface\Cloud\sgim_picface_cloud.bin

     文件   18042949  2019-04-12 19:16  SmartMemory\%SystemDrive%\ProgramData\SogouInput\Components\Picface\Cloud\sgim_picface_cloud_bak.bin

     文件        646  2019-01-06 19:13  SmartMemory\.qmake.stash

     文件      90540  2019-04-10 10:26  SmartMemory\1111.png

     文件   15843636  2019-04-12 11:36  SmartMemory\debug\SmartMemory.exe

     文件   24742912  2019-03-13 19:50  SmartMemory\jilu.db

     文件        185  2019-04-11 16:45  SmartMemory\main.cpp

     文件        870  2019-04-15 14:56  SmartMemory\mainwindow.cpp

     文件        516  2019-04-12 13:10  SmartMemory\mainwindow.h

     文件       2026  2019-04-12 13:13  SmartMemory\mainwindow.ui

     文件      20976  2019-04-13 16:34  SmartMemory\Makefile

     文件     257826  2019-04-13 16:34  SmartMemory\Makefile.Debug

     文件     258912  2019-04-13 16:34  SmartMemory\Makefile.Release

     文件       5238  2019-04-12 21:23  SmartMemory\myvideosurface.cpp

     文件        949  2019-04-11 16:45  SmartMemory\myvideosurface.h

     文件       3381  2019-04-13 16:34  SmartMemory\object_script.SmartMemory.Debug

     文件       3631  2019-04-13 16:34  SmartMemory\object_script.SmartMemory.Release

     文件      10462  2018-11-08 16:42  SmartMemory\PIC\MyURL.ico

     文件        964  2009-10-16 18:37  SmartMemory\PIC\stock_search.png

     文件      14504  2018-08-02 02:00  SmartMemory\QZXing.pri

     文件       4669  2019-04-15 21:34  SmartMemory\qzxingcamera.cpp

     文件        885  2019-04-15 14:51  SmartMemory\qzxingcamera.h

     文件       4570  2019-04-15 15:01  SmartMemory\qzxingcamera.ui

     文件      32359  2019-04-12 20:15  SmartMemory\release\AztecDecoder.o

     文件      50562  2019-04-12 20:15  SmartMemory\release\AztecDetector.o

     文件      10090  2019-04-12 20:14  SmartMemory\release\AztecDetectorResult.o

     文件      15436  2019-04-12 20:14  SmartMemory\release\AztecReader.o

     文件       1023  2019-04-12 20:14  SmartMemory\release\BarcodeFormat.o

     文件      12316  2019-04-12 20:15  SmartMemory\release\BigInteger.o

     文件       6935  2019-04-12 20:15  SmartMemory\release\BigIntegerAlgorithms.o

............此处省略717个文件信息