C++，使控制台程序内容适合所有不同 windows 计算机上的屏幕（显示相同大小）的代码，Visual Studio

Question

I'm new to stackoverflow, however, I always find good tips and tricks here and I thought I would join.

I'm currently in my second year of college and I decided to start working on my first portfolio project. My project is going to be a text-based turn-based RPG game that runs on the console for now, with the intention of learning DX11 and import it there and create a GUI. However, I'm currently focused on creating it as a console application first.

Currently, I'm having an issue making my application increase in either font-size (dynamically so that it displays the same on every windows computer) or just simply have the output scale up for its contents to fit the screen (on every windows computer). I have tried many methods concerning font-size change, the one that worked for me and worked on other PCs is the following:

#include <windows.h>


CONSOLE_FONT_INFOEX cfi{};
    cfi.cbSize = sizeof(cfi);
    cfi.nFont = 0;
    cfi.dwFontSize.X = 0;                   // Width of each character in the font
    cfi.dwFontSize.Y = 38;                  // Height
    cfi.FontFamily = FF_DONTCARE;
    cfi.FontWeight = FW_NORMAL;
    std::wcscpy(cfi.FaceName, L"Consolas"); // Choose your font
    SetCurrentConsoleFontEx(GetStdHandle(STD_OUTPUT_HANDLE), FALSE, &cfi);

While this method does work on my pc and all other computers, it doesn't do the job as well as I would have hoped. Since this code simply just enlarges text, on different monitors it can either be too large or too small. Whereas I am searching for a method that would simply fit the content on my console program output to screen, so that it displays the same on every computer.

While I know how to enlarge the font on the console (zoom in), I am looking for a method that displays the program the way I want it to on launch.

I am kindly asking if anyone has any tips in this matter, keep in mind this isn't homework assignment, or any graded project, this is simply for my portfolio project which is already teaching me a lot.

Glad to be a member of this community, thank you in advance!

Answer 1

If you want to scale your font size to your whole display, you would need to retrieve your display properties, so you can change the font width and height relative to the display width and height.

Since you are using the Windows API, I used functions included in Windows.h . You can only choose one of your displays at a time tho.

You specify the display with SDL_GetCurrentDisplayMode(displayIndex, displayMode) .

You might need to #include <cmath> to use std::round() depending on environment.

int charactersPerRow = 142;
int charactersPerCol = 44;

HWND activeWindow = GetActiveWindow();
HMONITOR activeMonitor = MonitorFromWindow(activeWindow, MONITOR_DEFAULTTONEAREST);  // Get Monitor closest to console
MONITORINFO monitorInfo{};
monitorInfo.cbSize = sizeof(MONITORINFO);
GetMonitorInfo(activeMonitor, &monitorInfo);                        // Receive monitor info and store it in monitorInfo

int displayWidth = monitorInfo.rcMonitor.right - monitorInfo.rcMonitor.left;
int displayHeight = monitorInfo.rcMonitor.bottom - monitorInfo.rcMonitor.top;

CONSOLE_FONT_INFOEX cfi{};
cfi.cbSize = sizeof(cfi);
cfi.nFont = 0;
cfi.dwFontSize.X = static_cast<short>(std::round((float)displayWidth / charactersPerRow));        // Width of each character in the font rounded
cfi.dwFontSize.Y = static_cast<short>(std::round((float)displayHeight / charactersPerCol));       // Height rounded
cfi.FontFamily = FF_DONTCARE;
cfi.FontWeight = FW_NORMAL;
std::wcscpy(cfi.FaceName, L"Consolas");                             // Choose your font
SetCurrentConsoleFontEx(GetStdHandle(STD_OUTPUT_HANDLE), FALSE, &cfi);

You might wanna check, if your active monitor has changed in your game loop and resize everything again. So i would recommend putting all the code for retrieving width and height and resizing the font in its own function and call it in your loop whenever your active monitor (where your console is located in) changes.

DO NOTE that you can zoom in the font with CTRL+Mouse wheel .