Het onderstaande programma is een voorbeeld van hoe een console-applicatie op te starten, en van hoe de uitvoer van dit programma uit te lezen en weer te geven. Alles gebeurt via de 3 standaard-handles: stdout, stdin en stderr (via Pipes).

#include "stdafx.h"

#include <windows.h>

int main()

{

  HANDLE input_PipeRead;

  HANDLE input_PipeWrite;

  HANDLE output_PipeRead;

  HANDLE output_PipeWrite;

  HANDLE error_PipeRead;

  HANDLE error_PipeWrite;

  CHAR message[] = "";

  PROCESS_INFORMATION process_info;

  STARTUPINFO startup_info;

  SECURITY_ATTRIBUTES security_attributes;

  // Set the security attributes for the pipe handles created

  security_attributes.nLength              = sizeof(SECURITY_ATTRIBUTES);

  security_attributes.bInheritHandle       = TRUE;

  security_attributes.lpSecurityDescriptor = NULL;

  // Create the pipes used for the communication

  CreatePipe(&output_PipeRead, &output_PipeWrite, &security_attributes, 0);

  CreatePipe(&input_PipeRead,  &input_PipeWrite,  &security_attributes, 0);

  CreatePipe(&error_PipeRead,  &error_PipeWrite,  &security_attributes, 0);

  // Prepare the startup structure for the child process

  ZeroMemory(&startup_info, sizeof(STARTUPINFO));

  startup_info.cb         = sizeof(STARTUPINFO);

  startup_info.hStdInput  = input_PipeRead;

  startup_info.hStdOutput = output_PipeWrite;

  startup_info.hStdError  = error_PipeWrite;

  startup_info.dwFlags    = STARTF_USESTDHANDLES;

  // Create the child process

  if(!CreateProcess(NULL, "cmd /C "echo Test"", NULL, NULL, TRUE, 0, NULL, NULL, &startup_info, &process_info))

    return 0;

  // Write a message to the child process

  if(*message)

  {

    DWORD bytes_written = 0;

    WriteFile(input_PipeWrite, message, strlen(message), &bytes_written, NULL);

  }

  // Wait for the process to end

  WaitForSingleObject(process_info.hProcess, INFINITE);

  // Read the message from the child process

  DWORD output_BytesToRead = 0, error_BytesToRead = 0;

  if(  !PeekNamedPipe(output_PipeRead, NULL, 0, NULL, &output_BytesToRead, NULL)
     || 
       !PeekNamedPipe(error_PipeRead, NULL, 0, NULL, &error_BytesToRead, NULL))

    return 0;

  CHAR *output_Buffer = new CHAR[output_BytesToRead + 1];

  CHAR *error_Buffer = new CHAR[error_BytesToRead + 1];

  if(output_Buffer && error_Buffer)

  {

    DWORD tmp_BytesRead;

    // Read the output code

    tmp_BytesRead = 0;

    if(output_BytesToRead)

      ReadFile(output_PipeRead, output_Buffer, output_BytesToRead, &tmp_BytesRead, NULL);

    output_Buffer[tmp_BytesRead] = 0;

    // Read any errors

    tmp_BytesRead = 0;

    if(error_BytesToRead)

      ReadFile(error_PipeRead, error_Buffer, error_BytesToRead, &tmp_BytesRead, NULL);

    error_Buffer[tmp_BytesRead] = 0;

    // Output

    if(*error_Buffer)

      MessageBox(NULL, error_Buffer,  "There were errors!", MB_OK);

    else

      MessageBox(NULL, output_Buffer, "Output code",        MB_OK);

  }

  return 0;

}

09-06-2011, 00:00 Geschreven door Fibergeek  

08-06-2011, 00:00 Geschreven door Fibergeek  

Application x:Class="Application"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             StartupUri="MainWindow.xaml">
</Application>
<Window x:Class="MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Een simpele test" Height="350" Width="525">
        <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="25">
          Dit is een simpele test...
        </TextBlock>
</Window>

07-06-2011, 00:00 Geschreven door Fibergeek