compilation.h    compilation_defs.h    exp_info.h    GCMainDialog.h    on_apply.h    setaxis.h

#ifndef ON_APPLY_H

#define ON_APPLY_H

void MainDialog::OnApply(){

CString CBInput; //user input is stored here

    GC_FormulaCB->GetWindowText(CBInput);CBInput.Trim();

    //If user did not enter anything, but there are functions in the list:

    if(CBInput.IsEmpty() && !CC_L.is_empty()) {GC_FormulaCB->SetCurSel(GC_FormulaCB->GetCount()-1); do_result(); draw(); return;}

    //If user did not enter anything and there are no functions in the list:

            if(CBInput.IsEmpty() && CC_L.is_empty()) {er.error("enter a function");}

    //If user entered a new function:

            else

        //First check if there is an exact same function in the list already:

        if(GC_FormulaCB->FindStringExact(-1,CBInput)==CB_ERR) {

            //Create a new function tree from user input:

            compilation * temp_comp=new compilation(CBInput);

            //If 'top' member of temp_comp is zero, that means entered function is invalid

            //and function tree cannot be built from user input; it should be discarded.

            //Aproppriate error message will be posted by function that found error.

            if(!temp_comp->top){delete temp_comp;}

            //Otherwise, new function tree is added to the compilation.

            //Function is also added to drop-down list and made current:

            else{CC_L.atb(temp_comp);

            GC_FormulaCB->InsertString(GC_FormulaCB->GetCount(),CBInput);

            GC_FormulaCB->SetCurSel(GC_FormulaCB->GetCount()-1);}       

        }

                        //If there is an exact same function, make it current:

        else(GC_FormulaCB->SetCurSel(GC_FormulaCB->FindStringExact(-1,CBInput)));

//----------------------------------------------------------------------------------------       

    //If error buffer is empty, draw graph, otherwise display errors on screen:

            if(er.err_buffer.is_empty()){do_result();draw();}

    else{

        int pos=2;

        CFont error_font;

        error_font.CreateFont(14,0,0,0,FW_BOLD,0,0,0,0,0,0,0,0,_T("System Font"));

        memGrid.SelectObject(&error_font);

        memGrid.SetTextColor(RGB(0,0,128));

        memGrid.FillSolidRect(0,0,GridX,GridY,RGB(255,255,255));

        while(!er.err_buffer.is_empty())

            {

                memGrid.TextOut(3,pos,er.err_buffer.first->value);

                er.rfo();pos+=14;

            }

    }

SendMessage(WM_PAINT);

}

#endif

compilation.h    compilation_defs.h    exp_info.h    GCMainDialog.h    on_apply.h    setaxis.h

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