Application output "flashes", but my GUI is not displayed on the screen.
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I have a problem with my project when a start with qDebug.
In my code I have two .txt files that I need to read in my program. But when I
put All.txt (my txt file) and dbconf.txt (my txt file) in my Working Directory my GUI doesn't show on screen.
When I delete All.txt and dbconf.txt, my GUI show but my application has no purpose because I gotta read and write in these text files.
How can I solve it? -
It's impossible to help without looking at the code. There can be million number of reasons matching your brief description.
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this is just a part of my code, but now to view the file I try to open when starting the program.
@{
ui->setupUi(this);//Write all paths in the GUI when start the program. _directorydbconf = "dbconf.txt"; if (!_directorydbconf.isEmpty()) { QFile file(_directorydbconf); if (!file.open(QIODevice::ReadOnly)) { QMessageBox::critical(this, tr("Error"), tr("Could not open file")); return; } QTextStream in(&file); line1 = in.readLine(); line12 = line1.mid(4); line2 = in.readLine(); line21 = line2.mid(4); //Reads from the fourth character ui->lineEdit_4->setText(line21); line3 = in.readLine(); line31 = line3.mid(4); //Reads from the fourth character ui->lineEdit_5->setText(line31); line4 = in.readLine(); line41=line4.mid(4); //Reads from the fourth character ui->lineEdit_6->setText(line41); } QFile file4(_directorydbconf); QTextStream in4(&file4); if(!file4.open(QFile::ReadOnly)){ qDebug() << "could not open file writing"; return; }else{ for(int x=0; x<7; x++){ _text11= in4.readLine(); } } for(int x=0; x=7; x++){ _text21= in4.readLine(); }}
@When I put the dbconf.txt file in the working directory, the GUI does not appear when I remove(dbconf.txt) the GUI file appears but with the mesagem "Could not open file".
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