| robin-zf |
2017-08-30 11:16 |
在读写文件的时候C++调用QML窗口失效
写了一个程序，C++里实现业务把N个文件的内容读出来，然后把内容写到另一个文件。读写文件时想调用一个进度条窗口，显示读到第几个文件。可是运行程序时，进度窗口显示的内容就是不出来，一定要等到读完写完，它才显示进度条。Wprocess.qml：- import QtQuick 2.0
import QtQuick.Controls 2.0
import QtQuick.Controls 1.4 as Control
import QtQuick.Controls.Styles 1.4
import QtGraphicalEffects 1.0
ApplicationWindow{
id:wprocess
width: 400;
height: 100;
visible: true
Text {
id:dir1
objectName: "text1"
text: "正在读取文件夹"
font.pixelSize: 12
anchors.top:parent.top
anchors.topMargin: 10
anchors.left: parent.left
anchors.leftMargin: 4
}
Control.ProgressBar{
id:processbar1
objectName: "bar1"
minimumValue: 0
maximumValue: 100
value: 0
width: 390
height: 20
anchors.top:dir1.bottom
anchors.topMargin: 4
anchors.left: parent.left
anchors.leftMargin: 2
}
}
调用代码：
- int ModelPage1::copybydate(const QString &read,const QString &write,QString date){
FileHelper* filehelper=new FileHelper;
QFileInfoList list=filehelper->getFiles(read);//获取目录下的子目录
QString str1,str2;
//--文件存在，删除
str2=write+"/"+date;
QFile file(str2);
if(file.exists()){
file.remove();
}
//--
QQmlEngine engine;
QQmlComponent component(&engine, QUrl(QStringLiteral("qrc:///Wprocess.qml")));
QObject *object = component.create();
QObject *text1 = object->findChild<QObject*>("text1");
QObject *bar1 = object->findChild<QObject*>("bar1");
if(bar1) {
bar1->setProperty("maximumValue", list.length());
}
int barvalue=1;
for(int i=0;i<list.length();i++) {//start to iterator file
QFileInfo fileinfo=list.at(i);
if(fileinfo.fileName()=="." or fileinfo.fileName()==".."){
i++;
continue;
}
date=date.replace("-","");
str1=fileinfo.path() + "/" + fileinfo.fileName() + "/" + date + ".ejl";
if(text1) {
text1->setProperty("text", "正在读取文件"+str1);
}
filehelper->copyAdd(str1,str2);//增量写文件
barvalue=barvalue+1;
bar1->setProperty("value",barvalue);
}
return 0;
}
读写中时这样：[attachment=17769]
读完之后，就显示正常了
[attachment=17770]
求大神有没有解决办法！！！ |
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