#include
// Hot key values.
#define RESUME_KEY 101
#define SUSPEND_KEY 102
#define TERMINATE_KEY 103
DWORD WINAPI ThreadProc(HWND hWnd)
{
TCHAR szBuffer[128];
wsprintf( szBuffer, "Starting Thread ID = %lX", GetCurrentThreadId() );
SetWindowText( hWnd, szBuffer );
Sleep( 5000 );
wsprintf( szBuffer, "Thread %lX finished execution", GetCurrentThreadId() );
SetWindowText( hWnd, szBuffer );
ExitThread( TRUE );
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
static HANDLE hChild = 0;
switch (uMsg)
{
case WM_CREATE:
RegisterHotKey(hWnd, RESUME_KEY, MOD_ALT, 'R');
RegisterHotKey(hWnd, SUSPEND_KEY, MOD_ALT, 'S');
RegisterHotKey(hWnd, TERMINATE_KEY, MOD_ALT, 'K');
return DefWindowProc( hWnd, uMsg, wParam, lParam );
case WM_DESTROY:
UnregisterHotKey(hWnd, RESUME_KEY);
UnregisterHotKey(hWnd, SUSPEND_KEY);
UnregisterHotKey(hWnd, TERMINATE_KEY);
PostQuitMessage( 0 );
break;
case WM_HOTKEY:
{
TCHAR szBuffer[128];
DWORD dwExitCodeThread = STILL_ACTIVE;
lstrcpy( szBuffer, "No Child Thread Running" );
if (hChild)
GetExitCodeThread(hChild, &dwExitCodeThread);
if (dwExitCodeThread==STILL_ACTIVE)
switch (wParam)
{
case SUSPEND_KEY:
wsprintf( szBuffer, "Suspending thread %lX", hChild );
SuspendThread(hChild);
break;
case RESUME_KEY:
wsprintf( szBuffer, "Resuming thread %lX", hChild );
ResumeThread(hChild);
break;
case TERMINATE_KEY:
wsprintf( szBuffer, "Terminating thread %lX", hChild );
TerminateThread(hChild, FALSE);
break;
}
SetWindowText( hWnd, szBuffer );
}
break;
case WM_COMMAND: // Process menu items.
switch ( LOWORD( wParam ) )
{
case IDM_TEST:
{ // Start a thread. Only one thread at at time.
DWORD dwExitCodeThread;
DWORD dwChild;
if (hChild)
GetExitCodeThread( hChild, &dwExitCodeThread );
if (dwExitCodeThread!=STILL_ACTIVE)
hChild = CreateThread(NULL, 0, ThreadProc, hWnd, 0, &dwChild );
}
break;
case IDM_EXIT:
DestroyWindow( hWnd );
break;
}
break;
default:
return DefWindowProc( hWnd, uMsg, wParam, lParam );
}
return NULL;
}
