Can a GUI program also launch a console? That might be useful as an
output for debug messages.
An old code snippet:
public class MyConsole : IDisposable
{
private const uint STD_INPUT_HANDLE = 0xfffffff6;
private const uint STD_OUTPUT_HANDLE = 0xfffffff5;
private const uint STD_ERROR_HANDLE = 0xfffffff4;
private const uint ATTACH_PARENT_PROCESS = 0xffffffff;
[DllImport("kernel32.dll")]
public static extern bool AttachConsole(uint dwProcessId);
[DllImport("kernel32.dll")]
public static extern bool AllocConsole();
[DllImport("kernel32.dll")]
public static extern bool FreeConsole();
[DllImport("kernel32.dll")]
public static extern int GetStdHandle(uint nStdHandle);
[DllImport("kernel32.dll")]
public static extern bool WriteConsole(int hConsoleOutput,
string lpBuffer,
int nNumberOfCharsToWrite,
ref int
lpNumberOfCharsWritten,
int lpReserved);
[DllImport("kernel32.dll")]
public static extern bool ReadConsole(int hConsoleInput,
StringBuilder lpBuffer,
int nNumberOfCharsToRead,
ref int lpNumberOfCharsRead,
int lpReserved);
private int stdin;
private int stdout;
public MyConsole()
{
/*
if(!AttachConsole(ATTACH_PARENT_PROCESS))
{
AllocConsole();
}
*/
AllocConsole();
stdin = GetStdHandle(STD_INPUT_HANDLE);
stdout = GetStdHandle(STD_OUTPUT_HANDLE);
}
public void WriteLine(string s)
{
int len = 0;
WriteConsole(stdout, s + "\r\n", s.Length + 2, ref len, 0);
}
public string ReadLine()
{
int len = 0;
StringBuilder sb = new StringBuilder();
ReadConsole(stdin, sb, 256, ref len, 0);
return sb.ToString(0, sb.Length - 2);
}
public void Dispose()
{
FreeConsole();
}
}
Arne
