CODEWITHSUNDEEP
c++console-applicationcursor-position
Jim Fell
Jim Fell

Reputation: 14256

Setting the Cursor Position in a Win32 Console Application

How can I set the cursor position in a Win32 Console application? Preferably, I would like to avoid making a handle and using the Windows Console Functions. (I spent all morning running down that dark alley; it creates more problems than it solves.) I seem to recall doing this relatively simply when I was in college using stdio, but I can't find any examples of how to do it now. Any thoughts or suggestions would be greatly appreciated. Thanks.

Additional Details

Here is what I am now trying to do:

COORD pos = {x, y};
HANDLE hConsole_c = CreateConsoleScreenBuffer( GENERIC_READ | GENERIC_WRITE, 0, NULL, CONSOLE_TEXTMODE_BUFFER, NULL );
char * str = "Some Text\r\n";
DWDORD len = strlen(str);

SetConsoleCursorPosition(hConsole_c, pos);
WriteConsole(hConsole_c, str, len, &dwBytesWritten, NULL);
CloseHandle(hConsole_c)

The text string str is never sent to the screen. Is there something else that I should be doing? Thanks.

Upvotes: 20

Views: 72184

Answers (5)

Hans Passant
Hans Passant

Reputation: 941218

Yeah, you forgot to call SetConsoleActiveScreenBuffer. What exactly was the point of creating your own? Use GetStdHandle(STD_OUTPUT_HANDLE) to get a handle to the existing console.

Upvotes: 4

udit043
udit043

Reputation: 1620

#include <windows.h>
#include <iostream.h>
using namespace std;
int main(int argc, char *argv[])
{
  int x,y;
  cin>>x>>y;
  SetCursorPos(x,y); //set your co-ordinate
  Sleep(500);
  mouse_event(MOUSEEVENTF_LEFTDOWN,x,y,0,0); // moving cursor leftdown
  mouse_event(MOUSEEVENTF_LEFTUP,x,y,0,0); // moving cursor leftup //for accessing your required co-ordinate
  system("pause");
  return EXIT_SUCCESS;
}

Upvotes: 1

Mark Ransom
Mark Ransom

Reputation: 308081

You were probably using ANSI excape code sequences, which do not work with Windows 32-bit console applications.

Upvotes: 1

cpx
cpx

Reputation: 17557

See SetConsoleCursorPosition API

Edit:

Use WriteConsoleOutputCharacter() which takes the handle to your active buffer in console and also lets you set its position.

int x = 5; int y = 6;
COORD pos = {x, y};
HANDLE hConsole_c = CreateConsoleScreenBuffer( GENERIC_READ | GENERIC_WRITE, 0, NULL, CONSOLE_TEXTMODE_BUFFER, NULL);
SetConsoleActiveScreenBuffer(hConsole_c);
char *str = "Some Text\r\n";
DWORD len = strlen(str);
DWORD dwBytesWritten = 0;
WriteConsoleOutputCharacter(hConsole_c, str, len, pos, &dwBytesWritten);
CloseHandle(hConsole_c);

Upvotes: 15

Jerry Coffin
Jerry Coffin

Reputation: 490018

Using the console functions, you'd use SetConsoleCursorPosition. Without them (or at least not using them directly), you could use something like gotoxy in the ncurses library.

Edit: a wrapper for it is pretty trivial:

// Untested, but simple enough it should at least be close to reality...
void gotoxy(int x, int y) { 
    COORD pos = {x, y};
    HANDLE output = GetStdHandle(STD_OUTPUT_HANDLE);
    SetConsoleCursorPosition(output, pos);
}

Upvotes: 17

Related Questions