Can't use C++ method in Qml side : Insufficient arguments

DavidM29

Hello,
I have made a C++ class that I use to make some calculation.
I this class I have some INVOKABLE methods. I exposed the C++ by registering it as a type with this line :

   qmlRegisterType<Calculs>("CustomControls", 1, 0, "Calculs");

I'm trying to use thos method in the main so I added a component "Calculs" with an id in the main.qml, then I call it from a Js function. My problem comes when the function is called. I have this error :

Error: Insufficient arguments

My C++ method use 3 double as input arguments, when I call my function I use this line :

var result = calc.getValue(1,2,3)

I don't really understand how could I have insufficient argument with this line.

Does anybody have a clue ?

Thank you in advance

tracyma

@DavidM29 try var result = calc.getValue(1.0, 2.0, 3.0)

DavidM29

@tracyma seems to works, thank you I belive it is due to format issu when I call the method.

DavidM29

Finally as soon as I use a variable from a TextField it does the same thing.

Here is how I convert the text to float :

 var floatValue= parseFloat(myTextField.getText())

I'm not sure the conversion works properly.
Is there any problem using this as a variable of my method ?

Diracsbracket

@DavidM29
You must use myTextField.text or myTextField.displayText to get the text. Both these are QML properties. getText() is a QML method, which does something else than you probably think it does, and which requires arguments, hence the error.

DavidM29

@Diracsbracket That was my problem here ! Thank you !