So, I have the following design:
List box
Text box
Push button
When I push the button, the text from the text box should go to the list box.
QTextEdit has the following signal:
void QTextEdit::textChanged () [signal]
But, doesn't this mean that when user presses an alphabet, a signal will be sent? But, I want the whole paragraph to go to the list box (at once) on the push of the button.
Should I send the data from text box to button and then from button to list box? Or there another way out?
EDIT 1:
I have been successful in sending the text from list box to the button, but how to send the text from button to list box?
Button has no signal which sends the text.
you should handle QPushButtons's clicked signal and then in that signal you can get QTextEdit's text content by toPlainText () API and you can insert this to List box's model
Related
I am using Glade to create GUI. I have the default GtkColorChooserDialog.
How to set signals to the Select and Cancel button clicked event.
These two buttons are grouped in one GtkButtonBox and I can only choose the box, but not the buttons themselves.
If I can't select the button then how to assign action to the clicked signal?
I have 2 TextEdit boxes and 5 buttons that are arranged in linear order.
The focus should be on the first TextEdit box when the program is started.
When tab key is pressed it should change the focus to the next widget.
Actually when a tab key is pressed the tab space is entered inside the TextEdit box. instead of moving to the next box. I also cannot use LineEdit Box because the input needs to be displayed in multiple lines. anyway the input wont contain enter key or '\n'
To change the behaviour of tab key you should look here:
http://doc.qt.io/qt-5/qplaintextedit.html#tabChangesFocus-prop
bool tabChangesFocus() const
void setTabChangesFocus(bool b)
I want to see how to make it in Gtk2 (e.g. C++). Does gtk2 has ability to set event which is called, when top menu item is clicked?
E.g. topmenu may be "File Edit Help". When "Edit" clicked (Alt+E key too) I want that event is called (event sets checkmarks for menu items in Edit).
How to do it.
You can "trap" them with activate-current. As most of the widgets, they have an activated signal handler.
I would like to add a simple text button to my c++ win32 application. I'm creating the button using CreateWindowEx function, but can't figure out the correct style to do so. I would like to display a text only button and be able to recive messages when the user clicks on it. The style i would like to get is identical to the text button in windows 7 system volume control (where it says "Mixer"). If possible i would like to display a tooltip also.
That mixer control looks more like a hyperlink control than a button. I'd go for the SysLink control if that's what you need.
You could create a "Button" class window with the BS_OWNERDRAW style and handle the WM_DRAWITEM messages. In your WM_DRAWITEM message handler you can simply display the text.
Actually that button is an owner draw button - it listens to mouse move messages and when you hover over it, it underlines the text (the syslink control doesn't have this behavior). Otherwise it's a stock button.
i have a button that is a rectangle how would i put words in it i want to make so ican click the word and it starts the progrma i know ShellExecute the style is BS_GROUPBOX
If you have more than one program you want to start, you need a button per program you want to start.
To start you external progrma, in the button parent window, you need to process the WM_COMMAND message with the BN_CLICKED notification.
To set the text of the button, you need to send WM_SETTEXT message to the button with the text you want shown.
Btw, BS_GROUPBOX is used for creating the rectangle around radio buttons. This style is not going to work for your scenario.
If you want an alternative to using multiple Button controls, you can use a Toolbar. In fact, it seems to me that a toolbar would be a better control for you. You can read more about creating a toolbar.