Newbie error

djm2

Hi there

I am brand new to QT creator and I am having a problem I was hoping that someone could help with. I have a project with a few screens - .qml file for each of the screens. I have a button on one screen and when the user presses the button I want to navigate/load another screen.

I have the following code -

@ ImageButton {
id: image_button1
x: 70
y: 214
width: 132
height: 80
text: "OUTPUTS"
font.bold: false
font.family: "Arial"
imageUp: "images/internal_button_up.bmp"
font.pixelSize: 18
textColor: "#000000"
imageDown: "images/internal_button_dn.bmp"
onButtonClick: root.message("../src/mainmenu.qml");
}@

The line - onButtonClick: root.message("../src/mainmenu.qml should take the user to another screen when the button is pressed. However when I run the code I get the following error - "ReferenceError: Can't find variable: root". The file mainmenu.qml is held in the project folder of the same project as the file that contains the above code.

David

sierdzio

IDs are not accessible from other QML files. If your "root" is defined in mainmenu.qml, then it is not visible in any other QML file.

djm2

Can you suggest a way to switch between the files? ie click on say an exit button and have it take you back to a main menu?

sierdzio

Use a Loader in MainMenu, and communicate using signals and slots mechanism. This is probably too involved for a newbie.

Another option is the solution found in Qt Examples and other demos: store all pages in a single QML file, and switch between them using States and Transitions.

All this is in the documentation, just give it a search :)