Hi all,
I put together the following code for test purposes, it is not a full
implementation with error checking etc or a final design, it just lets me
practice with some of the elements i will need. it compiles fine i just
renamed some of the variables before posting, i can't compile and test in work,
so excuse any typos i will update any that remain but i think it's ok.
Anyway, the issues i found were:
With the inputCb_i() function:
When the variable 'longI' was made a member of the Class itself, instead of
local to the callback, then the input fields were only responsive once,
i.e. if i entered the value into inputA, then released the field, the other
field (effectively the callback i suppose since they both share the same)
stopped responding, i could not click into it, why is that? When i made the
variable local again, it worked fine.
The other thing i quickly did before closing down last night:
Each input field is deactived after input for now as i thought it would be
easiest, if a mistake is made the user just has to click reset to reactivate
all fields and re-enter data.
The counter incremented in the inputCb() is a placeholder for now to flag when
all valid entries are received and user can continue.
I realise probably there would be a bool member variable to flag this 'ready'
state also but i not coded it in yet.
So i want the user to then be able to click 'reset' and reactive all fields.
It compiles without warnings
However i get a seg fault at the call to 'activate()' in reset() function.
I only ever clicked the button after the fields have been deactivated first,
and i know i should have coded in to prevent reset() being called unless the
fields were first deactivated anyway, but like i say i just added these lines
last thing.
some of the identation has come out a bit weird on pasting code in here...>
class SetupTest
{
public:
Fl_Window* SetupWindow;
Fl_Button* Reset;
Fl_Int_Input *inputA;
Fl_Int_Input *inputB;
bool state;
int valCount;
void InputCb_i(Fl_Widget* wgt, void* v);
static void InputCb(Fl_Widget* wgt, void* v);
void ButtonCb_i(Fl_Widget* wgt, void* v);
static void ButtonCb(Fl_Widget* wgt, void* v);
void Reset();
SetupTest();
};
SetupTest::SetupTest()
{
SetupWindow = new Fl_Window(300, 200);
Reset = new Fl_Button(226, 20, 64, 20, "Reset");
inputA = new Fl_Int_Input(215, 50, 20, 24, "InputA");
inputA->tooltip("enter number A");
inputA->type(2);
inputA->when(FL_WHEN_RELEASE);
inputB = new Fl_Int_Input(215, 80, 20, 24, "InputB");
inputB->tooltip("enter number B");
inputB->type(2);
inputB->when(FL_WHEN_RELEASE);
valCount = 0;
state = false;
inputA->callback((Fl_Callback*) InputCb);
inputB->callback((Fl_Callback*) InputCb);
Reset->callback((Fl_Callback*) ButtonCb);
SetupWindow->end ();
SetupWindow->show ();
}
void SetupTest::InputCb_i(Fl_Widget* w, void* v)
{
Fl_Int_Input* inp = (Fl_Int_Input*) w;
char* p;
long int longI = 0;
if (inp->changed())
{
inp->clear_changed();
longI = strtol(inp->value(), &p, 10);
printf("%s '%s'\n",inp->label(),inp->value());
printf("%ld\n",longI);
inp->deactivate();
valCount++;
}
if(valCount == 2)
{
printf("READY");
valCount = 0;
}
}
void SetupTest::InputCb(Fl_Widget* wgt, void* v)
{
((SetupTest*)(wgt->parent()))->InputCb_i(wgt, v);
}
void SetupTest::ButtonCb_i(Fl_Widget* w, void* v)
{
Fl_Button* button = (Fl_Button*) w;
if(!state)
{
Reset();
state = true;
}
else
state = false;
}
void SetupTest::ButtonCb(Fl_Widget* wgt, void* v)
{
((SetupTest*)(wgt->parent()))->ButtonCb_i(wgt, v);
}
void SetupTest::Reset()
{
inputB->activate();
inputA->activate();
}
int main (int argc, char ** argv)
{
SetupTest testObj;
return(Fl::run());
}
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