Any questions from a PROFI to a SUPER PROFI - 1. - page 22

[Alexander]

int start()
  {
//----
   int massa=100,shag=10,kol=4;
   perebor(massa,shag,kol);
//----
   return(0);
  }
//+------------------------------------------------------------------+
void perebor(int massa, int shag, int kol)
   {
   int massiv[];
   ArrayResize(massiv,kol);
   int x=kol;
   int handle = FileOpen("test.csv",FILE_WRITE,' ');
   
   recurs(massa,shag,massiv,x,kol,handle);
   FileClose(handle);
   }
void recurs  (int massa, int shag, int & massiv[], int x, int kol, int handle)
   { 
   int i,y;
   for(i=0;i<=massa;i+=shag)
      {
      if(x-1>0)
         {
         massiv[kol-x]=i;         
         recurs(massa-i,shag,massiv,x-1,kol,handle);                  
         }
      else
         {
         massiv[kol-x]=massa-i;
         for(y=0;y<kol;y++)
            {            
            FileWrite(handle,y," - ",massiv[y]);
            }
         return;   
         }   
      }
   } 

[Vasiliy Sokolov]

Thank you very much for the code. I'm having a hard time understanding how it works though:)

[Alexander]

You correctly wrote that the problem should be solved recursively. There is a given number of elements. As long as the element is not the last, the function enters itself with a reduced mass value by the value of all the increments in the previous iterations. On the last element, simply calculate the last residual and print.

[---]

what am I missing in the function that the button is not visible ?

This is a function in a DLL:

#define IDB_BUTTON   6500

//------------------------------------------------------------------
int __stdcall CreateBtn(int hWnd)
{
  HWND wnd=(HWND)hWnd; // хендл окна чарта
  HWND pwnd=GetParent(wnd); // получили родителя для создания кнопки
  ShowWindow(wnd, SW_HIDE); // скрыли чарт
  // создали кнопку
  HWND btn=CreateWindow("Button", "DLL BUTTON", WS_VISIBLE|WS_CHILD|BS_PUSHBUTTON, 
                15, 15, 100, 100, pwnd, (HMENU)IDB_BUTTON, (HINSTANCE)GetModuleHandle(NULL), NULL);
  ShowWindow(btn, SW_SHOW); // показали кнопку
  UpdateWindow(btn);

  // нарисовали на ней текст (для проверки что окно кнопки существует)
  HDC hdc = GetDC(btn);
  TextOut(hdc, 0, 0, (LPSTR)"String", 6);
  ReleaseDC(btn, hdc);
  RECT Rect; 
  GetWindowRect(btn,  &Rect); // получили размер
  return(Rect.right-Rect.left);  // вернули для проверки размера
}

when the function is called from the script - everything goes perfectly.

The chart at the top shows the text "String", the function itself returns the correct button width number 100.

But the button is not visible.

-------------

ZS
Found the problem - forgot to do UpdateWindow .
Thank you all :)

[Parkhomenko]

how to disable news on the chart in MT5????

[---]

parkhomenko:
how to disable news in MT5 that is displayed on the chart????

know besthere

[Igor Makanu]

Do you have any ideas on how to call "Notepad" from MT4?

I'm tired of storing data in .txt and opening it by hand (with mouse). I would like to open Notepad file ..МТ4\experts\files\data.txt after completing computations

thanks

[---]

#import "shell32.dll"
   int ShellExecuteA(int hwnd, string oper, string prog, string param, string dir, int show);
#import

ShellExecuteA(0, "Open", "notepad.exe", "data.txt", TerminalPath()+"\\experts\\files", 3);

[[删除]]

how do you change plus to minus by condition?

it looks like from the realm of fiction, if plus or minus had a value of int integer type, you could set int pl = +;)))

maybe there's an option.......

if(......) + ; else -;

[---]

Martingeil:

how do I change the plus from the minus in the condition?

select S=1 or S=-1. then multiply the required value by S

for example like this:

double S(bool b) 
{
  if (b) return(1); else return(-1); 
}

a=123;
Print(a*S(a<0))
Print(a*S(a==123))