关于qt png图片出现警告信息处理

 1 #include <QApplication>
 2 #include <QImage>
 3 #include <QFileDialog>
 4 
 5 int main(int argc, char *argv[])
 6 {    
 7     if(argc >= 2)
 8     {
 9         for(int i=1; i<argc; i++)
10         {
11             QImage image;
12             image.load(argv[i]);
13             image.save(argv[i]);
14             qDebug("%s converted",argv[i]);
15         }
16         return 0;
17     }
18     QApplication bc(argc, argv);
19     QFileDialog file_dialog;
20     file_dialog.setFileMode(QFileDialog::ExistingFiles);
21     file_dialog.setNameFilter("*.png");
22     if(file_dialog.exec() == QDialog::Accepted)
23     {
24         QStringList fileNames;
25         fileNames = file_dialog.selectedFiles();
26         for(int i=0; i<fileNames.size(); i++)
27         {
28             QImage image;
29             image.load(fileNames.at(i));
30             image.save(fileNames.at(i));
31             qDebug("%s converted",qPrintable(fileNames.at(i)));
32         }
33         return 0;
34     }
35     return bc.exec();
36 }