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winapi - How do we clear the console in assembly?

问题描述:

I am looking for a win32 api function that clears the console, much like the cls command

Thanks!

Devjeet

网友答案:

This is pretty old, but should still work. Conversion to assembly language is left as an exercise for the reader, but shouldn't be terribly difficult (most of it is just function calls, and the multiplication is trivial):

#include <windows.h>

void clear_screen(char fill = ' ') { 
    COORD tl = {0,0};
    CONSOLE_SCREEN_BUFFER_INFO s;
    HANDLE console = GetStdHandle(STD_OUTPUT_HANDLE);   
    GetConsoleScreenBufferInfo(console, &s);
    DWORD written, cells = s.dwSize.X * s.dwSize.Y;
    FillConsoleOutputCharacter(console, fill, cells, tl, &written);
    FillConsoleOutputAttribute(console, s.wAttributes, cells, tl, &written);
    SetConsoleCursorPosition(console, tl);
}
网友答案:

There is no Win32 API which directly clears the console - you need to use something like FillConsoleOutputCharacter.

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