display a char at a particular co ordinates on screen

This is a discussion on display a char at a particular co ordinates on screen within the C++ Programming forums, part of the General Programming Boards category; I want to display a character at specific positions on screen using values like x and y. Is it possible?? ...

  1. #1
    Dragon Rider jas_atwal's Avatar
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    display a char at a particular co ordinates on screen

    I want to display a character at specific positions on screen using values like x and y. Is it possible?? i am not able to find the correct function. I tried to google but no luck.
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    You're looking for gotoxy().

  3. #3
    Dragon Rider jas_atwal's Avatar
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    Quote Originally Posted by Desolation View Post
    You're looking for gotoxy().
    Thank you. But I assume that is not a standart C function. It is included in conio.h in windows. Is there a smiliar implimentation for linux/unix systems as well?

    Maybe curses.h. I'll try that.
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    and the hat of wrongness Salem's Avatar
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    ncurses is more portable than conio.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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    Registered User Devils Child's Avatar
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    i have the same problem and ncurses(.h) is not found by c++
    Code:
    #include <iostream>
    #include <ncurses.h>
    using namespace std;
    
    int main() {
    	gotoxy(3, 5); // what's the right command if the include file would work??
    	cout << "blah" << endl;
    	cin.get();
    }

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    (?<!re)tired Mario F.'s Avatar
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    Here. And don't forget to read the documentation. A good tutorial site can be found here.
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    Use this: dudeomanodude's Avatar
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    Quote Originally Posted by Devils Child View Post
    i have the same problem and ncurses(.h) is not found by C++
    ncurses is not standard header file. meaning, you have to link to it, which of course means you have to have it installed in your system first in order to work.

    if portability is not of concern, then by all means, go with windows.h and use gotoxy, otherwise, install ncurses or pdcurses in your system, usually for usage in windows this means copying a dll to c:\windows\system32 and finding the appropriate linker command (should be in the documentation of the library).

  8. #8
    Registered User Devils Child's Avatar
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    the windows.h include file does not support gotoxy(). thats what VS C++ said...
    portability - do you mean between operating systems? i mean - this IS portable to ALL other windows based computers when i use windows.h?

  9. #9
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    right portablility means between OS. including windows.h in a win32 app should work on any 2000/XP machine, and I would imagine it should work just fine with vista too (if it's a simple console app)

    right, I think gotoxy like you said is in conio.h, another non-standard header. i do know there is a similar function in windows.h, although the name of this function eludes me right now, it's something like SetCursorPosition() or something of the sort.

    Personally, I would find the windows.h function and use that if this program is for your benefit only.

  10. #10
    Registered User Devils Child's Avatar
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    you mean like this?
    Code:
    #include <iostream>
    #include <windows.h>
    using namespace std;
    
    int main() {
    	SetCursorPos(5, 10);
    	cout << "blah" << endl;
    	system("PAUSE");
    }
    this simply does not change the cursor position at all. it writes to position <1|1>.
    this does neither work without 'endl' or with printf!

  11. #11
    Use this: dudeomanodude's Avatar
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    Code:
    #include <windows.h>
    
    
    
    int main(){
    
        
    
        HANDLE console_handle;
    
        COORD cursor_coord;
    
        char *buffer = "X\n";
    
        DWORD actual = 0;
    
    
    
        cursor_coord.X=(40-(strlen(buffer)/2));
    
        cursor_coord.Y=10;
    
    
    
        console_handle = GetStdHandle(STD_OUTPUT_HANDLE);
    
    
    
        if(SetConsoleCursorPosition(console_handle, cursor_coord)){
    
        
    
            WriteConsole(console_handle, buffer, strlen(buffer), &actual, NULL);
    
        }
    
        
    
        
    
        system("pause");
    
        return 0;
    
    }
    This is all I could find in my archives of old win32 console apps. I can't run this right now (have only Linux in front of me) but maybe this will work for you, maybe. Let me know how it goes...

  12. #12
    Registered User Devils Child's Avatar
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    that writes a questionmark to the screen. also it would propably be good if you could write whole words at once, wouldnt it?

  13. #13
    Use this: dudeomanodude's Avatar
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    I just went to my Desktop, compiled exactly what I posted, and it worked. To write an actual word, just replace "x\n" with "word\n". I'm not sure why it printed a "?" to your screen.

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