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C++ Call non static function on another function

Pages: 12
Michelins (16)
I have the following code

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void APPDlg::set()
{
    WxGauge1->SetValue(20);
{

void Thread(void *)
{
    system("start run.exe");
    //how to call "APPDlg::set" non static function here?
}


how to call "APPDlg::set" non static function after system in void threat?

Thanks!!!
Last edited on
quirkyusername (792)
ok...what is the question?
Michelins (16)

how to call "APPDlg::set" non static function after system in void threat?
Moschops (7244)
It's a class function. Make an object of that class, and then call it on that object.

Alternatively, make it a static function of the class (with the static keyword), but be aware that you will then only be able to access static member variables with it.
coder777 (8444)
Michelins wrote:
how to call "APPDlg::set" non static function after system in void threat?
Pass 'new APPDlg' when you create the thread. And within the thread
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void Thread(void *p)
{
  APPDlg *a = (APPDlg *) p;

  a->set();

    system("start run.exe");
    //how to call "APPDlg::set" non static function here?
}
But be warned: it's very problematic to call any gui function from another thread
Michelins (16)
coder777

much obliged

indeed, the proposed solution worked, the more the program crash when you reach the point of calling a GUI object ...

what can I do to set this object WxGauge within the thread?
Michelins (16)
:(
Michelins (16)
:((
coder777 (8444)
Michelins wrote:
what can I do to set this object WxGauge within the thread?
Don't do it directly. Store the value in a member variable and then read this variable from a timer event of that window and set it to the WxGauge.

Note that I observed that the timer event may interfere with other events. So use 'wxCriticalSection' especially before you disconnect the timer event.
Michelins (16)
good, thanks for the help;

seen here, who declare themselves as well

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void APPDlg::set(wxCommandEvent& event)
{
    WxGauge1->SetValue(20);
{


works, more to do so

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        APPDlg *a = (APPDlg *) p;
        a->set(wxCommandEvent& event);


gives this error

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no matching function for call to `APPDlg::set()'

candidates are: void APPDlg::set(wxActivateEvent&)


Any idea what it is?

Thanks!!!
Last edited on
Michelins (16)
...
Michelins (16)
Please :(
coder777 (8444)
hm, I don't see what's the idea behind setting the value always to 20?

What I thought of was something like
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class APPDlg
{
  int Value;

public:
  APPDlg()
  {
    // Start timer
  }
  ~APPDlg()
  {
    // End timer
  }

  void TimerEvent(wxTimerEvent &e)
  {
    WxGauge1->SetValue(Value);
  }

  void SetValue(int v)
  {
    Value = v;
  }
};

...

void Thread(void *p)
{
  APPDlg *a = (APPDlg *) p;

  a->SetValue(20);

    system("start run.exe");
}
Michelins (16)
Well, there are several Threats, and each is assigned a different value

Thanks for the tip, plus the program crashed (APPCRASH) again :(
Michelins (16)
please :(
coder777 (8444)
if you 'a->SetValue(20);' and it still crashes then 'p' can't be the pointer to 'APPDlg'. Or there's something else that causes the crash.
Michelins (16)
Well, I noticed that if I put something from the GUI, the program gives APP CRASH, over whether to put another statement, it works normally ...
Michelins (16)
please :((
coder777 (8444)
So do you understand what I mean with 'time event'?
Michelins (16)
Well, I do not know what it is, the more I put the code in the same way that you quoted above,and did not

wxTimer tried with and gave the same, APP Crash

Thanks
Pages: 12