How to implement PNG Picture warning removal tool by Qt

This article introduces the relevant knowledge of "Qt how to implement PNG image warning removal tool". In the actual case operation process, many people will encounter such difficulties. Next, let Xiaobian lead you to learn how to deal with these situations! I hope you can read carefully and learn something!

I. Foreword

In the new version of Qt5, we used png images in Qt4 before, and here we often report a warning, libpng warning: iCCP: known incorrect sRGB profile, although this warning is invisible, can be ignored, but for the pursuit of perfect programmers, this seems to be a very unpleasant thing, may be because Qt5 added png check or the use of png library version caused by it, there are several ways to deal with it, one is to use PS software or other image editing software, Do not check ICC profile when re-saving the image, remove the icc profile of the png image, another way is to directly use Qt's own QImage to save as, since it is QImage that of course perfectly supports your own image processing, there will certainly be no warning.

void frmPngTool::on_btnOk_clicked(){ files.clear(); //Add individual files to queue QString currentFile = ui->txtFile->text().trimmed(); if (currentFile.isEmpty()) { files.append(currentFile); } //Save all png files in this directory into a linked list QString currentDir = ui->txtDir->text().trimmed(); if (! currentDir.isEmpty()) { QDir imagePath(currentDir); QStringList filter; filter progress->setRange(0, files.count()); ui->progress->setValue(0); int count = 0; foreach (QString file, files) { qDebug() setValue(count); qApp->processEvents(); } qDebug()