#Terminal dimensions (width and height)

1 messages · Page 1 of 1 (latest)

bleak sable
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I am trying out Zig for the first time and I want to create spinning cube in the terminal but I can't find a way to get the dimensions of the terminal (so that the cube would be the right size). I would like to do it with no library if possible. (Any tips or any I would need to know is always appreciated 🙂 )

hard spoke
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Hey! I’m away from my computer so I can’t give super detailed instructions. I’ve done this before though. Try looking at my term.zig file for my fuzzy finder. https://github.com/natecraddock/zf/blob/master/src/term.zig. The important parts are opening the /dev/tty file and the windowSize function.

languid cliff
languid cliff
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Ah, read it, no, it would not, ok ok

bleak sable
languid cliff
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Oki, This is a side I have touched a little

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first

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You will have to use at the bare minimum windows libs

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since those are the ones that defines that

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So you have to link kernel32 at the bare minimum

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Now "link" I say, but really is just getting the functions you will use

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now they are in C as you can see

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There are a few functions under std.os.windows.kernel32 too

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But you said no libs, so I guess std counts @bleak sable ?

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to get a external function (For example AllocConsole) we have:


extern "kernel32" fn AllocConsole() void;
bleak sable
languid cliff
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ye

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ye

bleak sable
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Thanks for the help. I will have a look. I am new to low level programming so it is a lot to take in.

languid cliff
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ye ye

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With std give me a second

languid cliff
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pub fn wWinMain(hInstance: std.os.windows.HINSTANCE, hPrevInstance: std.os.windows.HINSTANCE, lpCmdLine: std.os.windows.LPWSTR, nCmdShow: c_int) c_int {
        _ = hInstance;
        _ = hPrevInstance;
        _ = lpCmdLine;
        _ = nCmdShow;
        var info : std.os.windows.CONSOLE_SCREEN_BUFFER_INFO = undefined;
        var current_terminal_handler = std.os.windows.kernel32.GetStdHandle(std.os.windows.STD_OUTPUT_HANDLE) orelse return 2;  
        if(
        std.os.windows.kernel32.GetConsoleScreenBufferInfo(current_terminal_handler, &info) == 0
        ) {
            return 1;
        }
        std.log.err("size is x = {}, y = {}", .{info.dwSize.X, info.dwSize.Y});
        std.log.err("cursor is x = {}, y = {}", .{info.dwCursorPosition.X, info.dwCursorPosition.Y});
        std.log.err("attributes is {}", .{info.wAttributes});
        return 0;

}

Not on windows can't test

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i mean

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wine ig+

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Something along those lines

bleak sable
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doesnt compile but I think understand your code

languid cliff
# bleak sable doesnt compile but I think understand your code 
const std = @import("std");

pub fn wWinMain(hInstance: ?std.os.windows.HINSTANCE, hPrevInstance: ?std.os.windows.HINSTANCE, lpCmdLine: std.os.windows.LPWSTR, nCmdShow: c_int) c_int {
        _ = hInstance;
        _ = hPrevInstance;
        _ = lpCmdLine;
        _ = nCmdShow;
        var info : std.os.windows.CONSOLE_SCREEN_BUFFER_INFO = undefined;
        var current_terminal_handler = std.os.windows.kernel32.GetStdHandle(std.os.windows.STD_OUTPUT_HANDLE) orelse return 2;  
        if(
        std.os.windows.kernel32.GetConsoleScreenBufferInfo(current_terminal_handler, &info) == 0
        ) {
            return 1;
        }
        std.log.err("size is x = {}, y = {}", .{info.dwSize.X, info.dwSize.Y});
        std.log.err("cursor is x = {}, y = {}", .{info.dwCursorPosition.X, info.dwCursorPosition.Y});
        std.log.err("attributes is {}", .{info.wAttributes});
        return 0;

}
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corrected

bleak sable
pliant sluice
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Is wWinMain the entry point?

languid cliff
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yes

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You can use wWinMain and main