A Basic text-editing app which allows you to Bold / Unbold an individual text.

• Input a text.
• Use the features to edit the text.

• Compiled and Tested on Ubuntu 18.04 with Qt 5.

• Install qt5:

$ sudo apt-get install qt5-default

• Go to folder "Text-Editor-Qt", compile Text-Editor.pro and make:

$ cd Text-Editor-Qt
$ qmake Text-Editor.pro
$ make

• Execute file Text-Editor in folder "Text-Editor"

$ ./Text-Editor

• CREATING A NEW PROJECT : In QT Creator, a QT widgets application is created.

File -> New File or Project -> Application -> QT Widgets Application (Choose) -> Name & Location (Next) -> Desktop Kit (Next) -> Classname: MyTextEditor (Next) -> Finish

• DESIGNING UI : Open mytexteditor.ui file in QT Creator. Drag and Drop a "Text Edit" Input Widget into the editor area. In order to have the text edit widget occupy the whole screen, we add setCentralWidget to the main window.

this->setCentralWidget(ui->textEdit);

Press Ctrl+S (or Cmd+S) to save your changes.

• Add "Text" in menu bar and "Bold" in it. An action is created. Drag the action onto the task bar. Tick checkable for the action.

• To add an icon for "Bold" :

Text-Editor -> add New -> Qt -> Qt Resource File (Choose) -> Name (AppResources) & Location (inside Text-Editor) (Next) -> Finish.

In the appresources.qrc file in "Resources", add a prefix \Images and add a file (bold.png) inside Images. "Edit action" of "Bold Action" -> Icon (select)

• Right Click the action -> "Go to Slot" -> Triggered (bool) (Ok). Function "on_actionBold_triggered(bool checked)" is created in "mytexteditor.cpp" . Add this line inside the function.

checked ? ui->textEdit->setFontWeight(QFont::Bold) :
          ui->textEdit->setFontWeight(QFont::Normal);

• Build and Run

1. To understand the working of checkable action.

1. Can bold / unbold a particular text.