Lancement d'application

utilise plutot la commande CreateProcess il va te fournir un Handle de process que tu pouras tester avec WaitForSingleObject( pi.hProcess, INFINITE );
plus de billes msdn : msdn

Code:

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#include <windows.h>
#include <stdio.h>
 
void main( VOID )
{
    STARTUPINFO si;
    PROCESS_INFORMATION pi;
 
    ZeroMemory( &si, sizeof(si) );
    si.cb = sizeof(si);
    ZeroMemory( &pi, sizeof(pi) );
 
    // Start the child process. 
    if( !CreateProcess( NULL,   // No module name (use command line). 
        TEXT("MyChildProcess"), // Command line. 
        NULL,             // Process handle not inheritable. 
        NULL,             // Thread handle not inheritable. 
        FALSE,            // Set handle inheritance to FALSE. 
        0,                // No creation flags. 
        NULL,             // Use parent's environment block. 
        NULL,             // Use parent's starting directory. 
        &si,              // Pointer to STARTUPINFO structure.
        &pi )             // Pointer to PROCESS_INFORMATION structure.
    ) 
    {
        printf( "CreateProcess failed (%d).\n", GetLastError() );
        return;
    }
 
    // Wait until child process exits.
    WaitForSingleObject( pi.hProcess, INFINITE );
 
    // Close process and thread handles. 
    CloseHandle( pi.hProcess );
    CloseHandle( pi.hThread );
}