我有一个用C＃编写的程序，它使用Raster字体中不可用的字符。所以我想将字体改为Lucida Console。
要以编程方式更改Console字体，我将SetCurrentConsoleFontEx（）与此代码一起使用（来源：MSDN Console Class）但我在调用SetCurrentConsoleFontEx（）时遇到了System.AccessViolationException。
有人能帮帮我吗？
感谢您的帮助。
using System;
using System.Linq;
using System.Runtime.InteropServices;
namespace ConsoleExtender
{
public static class ConsoleHelper
{
[StructLayout(LayoutKind.Sequential)]
internal unsafe struct CONSOLE_FONT_INFO_EX
{
internal uint cbSize;
internal uint nFont;
internal COORD dwFontSize;
internal int FontFamily;
internal int FontWeight;
internal fixed char FaceName[LF_FACESIZE];
}
[StructLayout(LayoutKind.Sequential)]
internal struct COORD
{
internal short X;
internal short Y;
internal COORD(short x, short y)
{
X = x;
Y = y;
}
}
[DllImport("kernel32.dll", SetLastError = true)]
static extern IntPtr GetStdHandle(int nStdHandle);
[DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
static extern bool GetCurrentConsoleFontEx(
IntPtr consoleOutput,
bool maximumWindow,
ref CONSOLE_FONT_INFO_EX lpConsoleCurrentFontEx);
[DllImport("kernel32.dll", SetLastError = true)]
static extern bool SetCurrentConsoleFontEx(
IntPtr consoleOutput,
bool maximumWindow,
CONSOLE_FONT_INFO_EX consoleCurrentFontEx);
private const int STD_OUTPUT_HANDLE = -11;
private const int TMPF_TRUETYPE = 4;
private const int LF_FACESIZE = 32;
private static IntPtr INVALID_HANDLE_VALUE = new IntPtr(-1);
public static void SetConsoleFont(string fontName = "Lucida Console")
{
unsafe
{
IntPtr hnd = GetStdHandle(STD_OUTPUT_HANDLE);
if (hnd != INVALID_HANDLE_VALUE)
{
CONSOLE_FONT_INFO_EX info = new CONSOLE_FONT_INFO_EX();
info.cbSize = (uint)Marshal.SizeOf(info);
// Set console font to Lucida Console.
CONSOLE_FONT_INFO_EX newInfo = new CONSOLE_FONT_INFO_EX();
newInfo.cbSize = (uint)Marshal.SizeOf(newInfo);
newInfo.FontFamily = TMPF_TRUETYPE;
IntPtr ptr = new IntPtr(newInfo.FaceName);
Marshal.Copy(fontName.ToCharArray(), 0, ptr, fontName.Length);
// Get some settings from current font.
newInfo.dwFontSize = new COORD(info.dwFontSize.X, info.dwFontSize.Y);
newInfo.FontWeight = info.FontWeight;
SetCurrentConsoleFontEx(hnd, false, newInfo);
}
}
}
}
}
答案 0 :(得分：7)
您定义这些API调用的方式存在两个问题。
首先，SetCurrentConsoleFontEx的{{3}}说：
lpConsoleCurrentFontEx指针 到包含字体信息的
CONSOLE_FONT_INFOEX结构。
所以第三个参数需要通过引用传递：
[DllImport("kernel32.dll", SetLastError = true)]
static extern bool SetCurrentConsoleFontEx(
IntPtr consoleOutput,
bool maximumWindow,
ref CONSOLE_FONT_INFO_EX consoleCurrentFontEx);
你需要调用这样的方法：
SetCurrentConsoleFontEx(hnd, false, ref newInfo);
其次，FaceName结构中的CONSOLE_FONT_INFO_EX字段是 Unicode 字符的数组。我必须指定CharSet才能让它发挥作用：
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
internal unsafe struct CONSOLE_FONT_INFO_EX
{
internal uint cbSize;
internal uint nFont;
internal COORD dwFontSize;
internal int FontFamily;
internal int FontWeight;
internal fixed char FaceName[LF_FACESIZE];
}
答案 1 :(得分：1)
我不知道为什么会这样，但如果你去了属性 - ＆gt;构建并禁用“首选32位”，不会再出现错误。
答案 2 :(得分：0)
我只有一个解决此问题的方法，建立了开放的平台目标，然后选择下拉菜单到Any cpu，那么它将完全起作用
答案 3 :(得分：-1)
根据第三个问题/减少的提示？上面，我设法让它工作， 在我的Vista机器上。肯定不在XP上工作。
/*
Purpose: Set a TrueType font in the Windows command window, in order that
multinational characters have a fighting chance of being readable.
Usage: This should only work on Windows Vista or Server 2008 and later.
To check, use the 'ver' command and disallow the strings " 2000 ",
" 2003 ", and " XP ". Or allow only the strings " 6." and "10.".
One way to do it is using the DOS commands:
ver | findstr /r /c:"\[[^ ]* *[16]" > "%TEMP%\nul"
if errorlevel 1 goto skipfont
If OK, use:
askufont [/d] FONTNAME
Here /d, if present, turns on debug mode.
Return status: If the errorlevel is zero, supposedly *some* Truetype
font has been set.
To see whether, say, font Consolas has really been set and not, say,
font "Lucida Console", use:
askufont Consolas
if errorlevel 1 goto err
askufont /d Consolas | find "Got font name: Consolas"
if errorlevel 1 goto err
askufont /?: displays help info on standard error.
askufont /.: returns errorlevel 175.
askufont /!: writes "askufont.cs by Leon van Dommelen v1" to standard
output (not standard error) and returns errorlevel 177.
Subsequent backward-compatible version numbers can be
appended to v1 (e.g. v12 for version 2).
Copyright: Copyright 2017 Leon van Dommelen. This software is made
available under the GNU Public License version 3.
There is no warrantee of any kind on this free software.
This originated from
https://msdn.microsoft.com/en-us/library/System.Console.aspx
but that did not work.
I got error corrections from "thirdwaffle" in the thread
http://stackoverflow.com/questions/20631634/
changing-font-in-a-console-window-in-c-sharp
In particular, the last argument of SetCurrentConsoleFont was
corrected to a pointer just like in GetCurrentConsoleFont. And
the charset in CONSOLE_FONT_INFOEX was changed to Unicode.
After that, it still did not work. Turned out to be bad values
for the newInfo buffer below. I got values that actually work
(for me) from
http://www.janthor.com/sketches/index.php?/archives/19-How-
to-change-the-font-of-the-Windows-console-with-Python.html
He lists:
TERMINAL = Font(9, 10, 18, 48, 400, "Terminal")
CONSOLAS = Font(9, 8, 18, 54, 400, "Consolas")
LUCIDA = Font(12, 11, 18, 54, 400, "Lucida Console")
LUCIDA14 = Font(12, 8, 14, 54, 400, "Lucida Console")
The key is that the font family *must* be 54, not just the
TT bit of it.
Finally, I rewrote it all to make it more usable and changeable.
Make: C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe/unsafe askufont.cs
*/
using System;
using System.Runtime.InteropServices;
public class SetTTFont
{
// Import GetStdHandle to get a handle on the terminal output.
[DllImport("kernel32.dll", SetLastError = true)]
static extern IntPtr GetStdHandle(int nStdHandle);
// Import GetCurrentConsoleFontEx for current font info.
[DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
static extern bool GetCurrentConsoleFontEx(
IntPtr consoleOutput,
bool maximumWindow,
ref CONSOLE_FONT_INFOEX lpConsoleCurrentFontEx);
// Import SetCurrentConsoleFontEx to change the font.
[DllImport("kernel32.dll", SetLastError = true)]
static extern bool SetCurrentConsoleFontEx(
IntPtr consoleOutput,
bool maximumWindow,
ref CONSOLE_FONT_INFOEX lpConsoleCurrentFontEx);
// Define descriptive names for some constants.
private const int STD_OUTPUT_HANDLE = -11;
private const int TMPF_TRUETYPE = 4;
private const int FONT_FAMILY = 54;
private const int LF_FACESIZE = 32;
private static IntPtr INVALID_HANDLE_VALUE = new IntPtr(-1);
public static unsafe int Main( string[] args )
{
// whether we are in debug mode
bool debug = false;
// handle on standard output
IntPtr hnd;
// old and new console information structures
CONSOLE_FONT_INFOEX oldInfo, newInfo, setInfo;
// converted char[] string
string str;
// argument index
int i;
// process arguments
for (i=0; i<args.Length; i++) {
if (args[i].Length < 1) {
Console.Error.WriteLine("*** askufont: Nil argument {0}", i+1);
Console.Error.WriteLine(" Enter askufont /? for help.");
return 2;
}
if (args[i][0] != '/') {
break;
}
if (args[i].Length != 2 || args[i][0] != '/') {
Console.Error.WriteLine(
"*** askufont: Bad option {0}: {1}", i+1, args[i]);
Console.Error.WriteLine(" Enter askufont /? for help.");
return 2;
}
if (args[i][1] == 'd' || args[i][1] == 'D') {
debug = true;
}
else if (args[i][1] == '?') {
Console.Error.WriteLine(
" askufont is Copyright 2017 Leon van Dommelen.");
Console.Error.WriteLine(
" This software is made available under the GNU Public License version 3.");
Console.Error.WriteLine(
" There is no warrantee of any kind on this free software.");
Console.Error.WriteLine(
"Usage: askufont [/d] FONTNAME");
Console.Error.WriteLine(
"Tries to set a TrueType console font.");
Console.Error.WriteLine(
"/d: Output debug information.");
Console.Error.WriteLine(
"FONTNAME: a TrueType font name like \"Lucida Console\" or Consolas.");
Console.Error.WriteLine(
"Works for Windows Vista and later only; in the output of the VER command,");
Console.Error.WriteLine(
"disallow the strings \" 2000 \", \" 2003 \", and \" XP \" using FIND.");
Console.Error.WriteLine(
"See the askufont.cs source for more details.");
Console.Error.WriteLine(
"Version: Leon van Dommelen 1.");
return 2;
}
else if(args[i][1] == '.') {
return 175;
}
else if(args[i][1] == '!') {
Console.WriteLine("askufont.cs by Leon van Dommelen v1");
return 177;
}
else {
Console.Error.WriteLine(
"*** askufont: Bad option {0}: {1}", i+1, args[i]);
Console.Error.WriteLine(" Enter askufont /? for help.");
return 2;
}
}
// Check the font argument.
if (i > args.Length-1) {
Console.Error.WriteLine("*** askufont: Missing font name.");
Console.Error.WriteLine(" Enter askufont /? for help.");
return 2;
}
if (i < args.Length-1) {
Console.Error.WriteLine("*** askufont: Misplaced font name.");
Console.Error.WriteLine(" Enter askufont /? for help.");
return 2;
}
if (debug) Console.Error.WriteLine(
"Requested Font: {0}", args[i]);
// get a handle on standard output
hnd = GetStdHandle(STD_OUTPUT_HANDLE);
if (hnd == INVALID_HANDLE_VALUE) {
Console.Error.WriteLine(
"*** askufont: Unable to get a handle on standard output!");
return 2;
}
// First determine the current font information.
oldInfo = new CONSOLE_FONT_INFOEX();
oldInfo.cbSize = (uint) Marshal.SizeOf(oldInfo);
if (!GetCurrentConsoleFontEx(hnd, false, ref oldInfo)) {
Console.Error.WriteLine(
"*** askufont: Unable to get console font information!");
return 2;
}
if (debug) {
Console.Error.WriteLine(
"Old font info block size: {0}", oldInfo.cbSize);
Console.Error.WriteLine("Old font font number: {0}", oldInfo.nFont);
Console.Error.WriteLine(
"Old font width: {0}", oldInfo.dwFontSize.X);
Console.Error.WriteLine(
"Old font height: {0}", oldInfo.dwFontSize.Y);
Console.Error.WriteLine("Old font family: {0}", oldInfo.FontFamily);
Console.Error.WriteLine("Old font weight: {0}", oldInfo.FontWeight);
str = new string(oldInfo.FaceName);
Console.Error.WriteLine("Old font name: {0}", str);
}
// Set generic data for the new font, taking some from the old font.
newInfo = new CONSOLE_FONT_INFOEX();
newInfo.cbSize = (uint) Marshal.SizeOf(newInfo);
newInfo.nFont = 0;
newInfo.FontFamily = FONT_FAMILY;
IntPtr ptr = new IntPtr(newInfo.FaceName);
Marshal.Copy(args[i].ToCharArray(), 0, ptr, args[i].Length);
newInfo.dwFontSize=new COORD(oldInfo.dwFontSize.X,oldInfo.dwFontSize.Y);
newInfo.FontWeight = oldInfo.FontWeight;
if (debug) {
Console.Error.WriteLine(
"New font info block size: {0}", newInfo.cbSize);
Console.Error.WriteLine("New font font number: {0}", newInfo.nFont);
Console.Error.WriteLine(
"New font width: {0}", newInfo.dwFontSize.X);
Console.Error.WriteLine(
"New font height: {0}", newInfo.dwFontSize.Y);
Console.Error.WriteLine("New font family: {0}", newInfo.FontFamily);
Console.Error.WriteLine("New font weight: {0}", newInfo.FontWeight);
str = new string(newInfo.FaceName);
Console.Error.WriteLine("New font name: {0}", str);
}
// Try setting the new font.
SetCurrentConsoleFontEx(hnd, false, ref newInfo);
setInfo = new CONSOLE_FONT_INFOEX();
setInfo.cbSize = (uint) Marshal.SizeOf(setInfo);
if (!GetCurrentConsoleFontEx(hnd, false, ref setInfo)) {
Console.Error.WriteLine(
"*** askufont: Unable to get the new font information!");
return 2;
}
if (debug) {
Console.Error.WriteLine(
"Got font info block size: {0}", setInfo.cbSize);
Console.Error.WriteLine("Got font font number: {0}", setInfo.nFont);
Console.Error.WriteLine(
"Got font width: {0}", setInfo.dwFontSize.X);
Console.Error.WriteLine(
"Got font height: {0}", setInfo.dwFontSize.Y);
Console.Error.WriteLine("Got font family: {0}", setInfo.FontFamily);
Console.Error.WriteLine("Got font weight: {0}", setInfo.FontWeight);
str = new string(setInfo.FaceName);
Console.Error.WriteLine("Got font name: {0}", str);
}
// Check that at least we have a TT font now.
if ((setInfo.FontFamily & TMPF_TRUETYPE) != TMPF_TRUETYPE) {
Console.Error.WriteLine(
"*** askufont: Error setting a TrueType font!");
return 2;
}
// Done.
return 0;
}
// Define the COORD structure.
[StructLayout(LayoutKind.Sequential)]
internal struct COORD
{
internal short X;
internal short Y;
internal COORD(short x, short y)
{
X = x;
Y = y;
}
}
// Define the CONSOLE_FONT_INFOEX structure.
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
internal unsafe struct CONSOLE_FONT_INFOEX
{
internal uint cbSize;
internal uint nFont;
internal COORD dwFontSize;
internal int FontFamily;
internal int FontWeight;
internal fixed char FaceName[LF_FACESIZE];
}
}
如果有任何帮助。编译说明在代码中。需要Microsoft.Net第4版。