Help with "error: no matching function for call to..."

[BasicPoke]

I need help please with this error.

@C:\Users\evanron\Documents\Projects\Qt\Gauge Monitor\Source Code\GaugeMon.cpp:73: error: no matching function for call to 'GaugeInfoTypeEH::GaugeInfoTypeEH()'
GaugeMon::GaugeMon(QWidget *parent) : QMainWindow(parent), ui(new Ui::GaugeMon)
^@

@namespace Ui {
class GaugeMon;
}

class GaugeInfoTypeEH
{
private:
Ui::GaugeMon *ui;
public:
GaugeInfoTypeEH(Ui::GaugeMon *ui);
qint8 state;
qint8 frame_num;
quint16 threshold;
};@

I added the "Ui" lines into GaugeInfoTypeEH because I want to access the UI on occasion from that class, and I saw something similar done in my "main window" class GaugeMon. Where am I going wrong? The inheritance and the *Ui::GaugeMon ui; lines get me confused.

Thanks
Ron

[andreyc]

A constructor definition in cpp file is not correct. According to declaration in a header file GaugeInfoTypeEH is not derived from QMainWindow and does not accept QWidget. You need to change it to something like this
@
GaugeMon::GaugeMon(Ui::GaugeMon* ui) : ui(ui)
@

[BasicPoke]

Thank you andreyc, but GaugeMon has been the same for months and I don't think anything is wrong with it. GaugeInfoTypeEH is new and it is what needs to be changed, I believe.

@namespace Ui {
class GaugeMon;
}

class GaugeMon : public QMainWindow
{
Q_OBJECT

public:
explicit GaugeMon(QWidget *parent = 0);
~GaugeMon();@

Why is the compiler indicating a call to GaugeInfoTypeEH::GaugeInfoTypeEH() but pointing to GaugeMon::GaugeMon?
Ron

[BasicPoke]

I figured out my problem. I was declaring a GaugeInfoTypeEH object with no arguments to the constructor:

@GaugeInfoTypeEH GaugeInfoEH;@

I changed to the following and it compiles:

@GaugeInfoTypeEH GaugeInfoEH(Ui::GaugeMon);@

My intent was to include this, copying from another class, in case this class needs to read a setting from the UI.

But I don't understand the expression Ui::GaugeMon. Where is Ui declared? It is not in my code, I searched. I thought the namespace but I commented that out. Can someone please help me understand this.
Thanks
Ron

[andreyc]

Glad you resolved compiler issue.
About Ui::
If you use qtcreator try to create Qt widget project using qtcreator wizard. It will show how Ui:: is used.