How to change font size about crossterm HOT 10 CLOSED

That is because it is not yet supported unfortunately.

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Some research needed to see if this is possible to implement.

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I have found some code, it may be helpful.

struct CONSOLE_FONT
{
	DWORD index;
	COORD dim;
};

typedef BOOL (WINAPI *PROCSETCONSOLEFONT)(HANDLE, DWORD);
typedef BOOL (WINAPI *PROCGETCONSOLEFONTINFO)(HANDLE,BOOL,DWORD,CONSOLE_FONT*);
typedef COORD (WINAPI *PROCGETCONSOLEFONTSIZE)(HANDLE,DWORD);
typedef DWORD (WINAPI *PROCGETNUMBEROFCONSOLEFONTS)();
typedef BOOL (WINAPI *PROCGETCURRENTCONSOLEFONT)(HANDLE,BOOL,CONSOLE_FONT*);

PROCSETCONSOLEFONT SetConsoleFont;
PROCGETCONSOLEFONTINFO GetConsoleFontInfo;
PROCGETCONSOLEFONTSIZE GConsoleFontSize;
PROCGETNUMBEROFCONSOLEFONTS GetNumberOfConsoleFonts;
PROCGETCURRENTCONSOLEFONT GCurrentConsoleFont;

int _tmain(int argc, _TCHAR* argv[])
{
	int nNumFont;

	HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);	
	HMODULE hKernel32 = GetModuleHandle(L"kernel32");

	SetConsoleFont = (PROCSETCONSOLEFONT)GetProcAddress(hKernel32,"SetConsoleFont");
	GetConsoleFontInfo = (PROCGETCONSOLEFONTINFO)GetProcAddress(hKernel32,"GetConsoleFontInfo");
	GConsoleFontSize = (PROCGETCONSOLEFONTSIZE)GetProcAddress(hKernel32,"GetConsoleFontSize");
	GetNumberOfConsoleFonts = (PROCGETNUMBEROFCONSOLEFONTS)GetProcAddress(hKernel32,"GetNumberOfConsoleFonts");
	GCurrentConsoleFont = (PROCGETCURRENTCONSOLEFONT)GetProcAddress(hKernel32,"GetCurrentConsoleFont");

	nNumFont = GetNumberOfConsoleFonts();
	CONSOLE_FONT *pFonts = new CONSOLE_FONT[nNumFont];
	GetConsoleFontInfo(hConsole, 0, nNumFont, pFonts);

	SetConsoleFont(hConsole, pFonts[5].index);

	cout << "This is Console C++!" << endl;

	return 0;
}

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More detail information can be found in this blog.

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In a Unix environment, we might find some inspiration from the console-setup tool.

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Nice findings!. We only need some code on how to do this in UNIX.

I am not sure if this is going to work out because every terminal supports different fonts and different options for fonts. So we can make some kind of generic support but this crated is meant to support all platforms and to my knowledge I don't see much things in common if it goes about font. If you take color for example very terminal supports that.

Maybe we can provide some kind of tools so the user can manually play with the different font options the terminal has he wants to use.

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The font types supported by different terminals may be different, but they should all support adjusting the font size.

The font size setting should be a generic interface, which will give the terminal more possibilities.

If we can make the font smaller, we can use the terminal to simulate rendering more things, maybe a picture, maybe a video.

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One idea is that we provide an interface to help the user detect which fonts are supported by the current terminal, and then the user can select one of these fonts as needed.

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Yea those are great ideas! Think maybe just as you said it providing tools for the user is probably already good enough.

Currently I am working on some other projects just taking a little brake from this crate since I had been working on it for 8 months :). But I am willing to investigate into these features. See what is possible. And feel free to also look at certain options, and open an PR if you think you have an great idea. Together we certainly can make it work faster.

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Closing in favor of #166

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