Temp data to lcd widget

lihakimpale

I am new to GUI development and don't have much experience in C++ either. I am trying to print my temperature data to the lcd widget when pressed pushbutton. Temperature data is coming from bluetooth server and stored in a struct.

@#include "mainwindow.h"
#include "ui_mainwindow.h"

extern "C"{
#include "defines.h"
}

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
}

MainWindow::~MainWindow()
{
delete ui;
}

void MainWindow::on_Temp_Button_clicked()
{
struct Measurement_Data *m_Data;

m_Data = L2CAP_server();

}

void MainWindow::on_Humi_Button_clicked()
{

}

void MainWindow::on_lcdNumber_overflow()
{

}@

If you could show me how I can get the temp data printet to lcd widget when pressed that pushbutton named Temp_Button.

Jeroentjehome

Hi,
Just to make life easy, why not use a QLineEdit as a readonly object to first store your value in. Then when that all works, check out how to show the data in the LCDWidget.
The QLineEdit has a setText function. Convert the m_Data value (a member of that struct) to a QString and set the text.
When we do not have the m_Data struct definition there is no way we are able to show any code.

lihakimpale

Oh sorry forgot that struct definition.

@struct Measurement_Data {

float temp;
float humi;
};@

Jeroentjehome

Ah, that is a bit more easy to understand then ;-)
Isn't it just:
@
ui->yourLcdWidget.display(m_Data.temp);
@

lihakimpale

error: '((MainWindow*)this)->MainWindow:ui->Ui:MainWindow:<anonymous>.Ui_MainWindow:lcdNumber' cannot be used as a function