Dear Forumers, I tryed to get input file name by QInputDialog::getText(0 method and came up with strange behaviour. If after click on OK at the dialog window program didn't returned . I made another click and after that I got what I expected after first click. Why ? In case I clicked on Cancel button - everything is Ok. Could you please to give me hint how to get right behaviour ? Se my code below (I am workin on LINUX Debian Wheezy machine). Thank you in advance for help.
Qt Code: 
  1. #include <QApplication>
  2. #include <QInputDialog>
  3. #include <QDebug>
  4.  
  5. void writ_file();
  6. QString InputFileName();
  7.  
  8. QString file_name = "test.txt";
  9.  
  10. int main(int argc, char **argv){    
  11.   QApplication app(argc, argv);
  12.   writ_file();
  13.   return app.exec();
  14. }
  15.  
  16. void writ_file() {
  17.  
  18.   if(InputFileName() == "" ) {
  19.     qDebug() << "Input file name  -> cancelled. Uses the default name : "
  20. 	     <<  file_name << endl;
  21.   }
  22.   else file_name = InputFileName();
  23.   qDebug() << "writ_file() -> " << file_name;
  24.   return;
  25. }
  26.  
  27. QString InputFileName() {
  28.  
  29.   bool bOk; 
  30.   QString FileName = QInputDialog::getText(0,
  31. 		     "Input File Name",
  32. 		     "Name:", 
  33. 		     QLineEdit::Normal, 
  34. 		     "test.txt", 
  35. 		     &bOk 
  36. 					   ); 
  37.   if (!bOk) { 
  38.     // Была нажата кнопка Cancel 
  39.     return "";
  40.   }
  41.   qDebug() << FileName ;
  42.   //printed Filename after first click (hanging, don't make return) 
  43.   // and after second click print again and make return
  44.   return FileName;
  45. }
  46. //  Output if I press OK
  47. //  "test.txt" 
  48. //  "test.txt" 
  49. //   writ_file() ->  "test.txt"
  50. //  Output if I press Cancel
  51. //  Input file name  -> cancelled. Uses the default name :  "test.txt" 
  52.  
  53. //  writ_file() ->  "test.txt"
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