Create a new thread

The function prototype used in this program is as follows:
Cwinthread * afxbeginthread (afx_threadproc pfnthreadproc, lpvoid pparam, int npriority = thread_priority_normal, uint nstacksize = 0, DWORD dwcreateflags = 0, define lpsecurityattrs = NULL );
Cwinthread * afxbeginthread (cruntimeclass * pthreadclass, int npriority = thread_priority_normal, uint nstacksize = 0, DWORD dwcreateflags = 0, lpsecurity_attributes securlpityattrs = NULL );
We usually use the first of the above two functions.
(1) pfnthreadproc indicates the function to be started as a new thread (a global function must be defined in advance), and the function must be in the following format:
Uint mycontrollingfunction (lpvoid pparam)
{
// You can add a program with high CPU usage or an endless loop program.
// This thread name is displayed in the task list with a form, that is, the form name.
Return 0;
}
(2) pparam indicates the window handle specified for the new thread, for example:
Afxgetmainwnd ()-> m_hwnd
(3) npriority indicates the priority of the thread. Optional values include:
Thread_priority_above_normal has a higher priority than normal;
Thread_priority_below_normal has a lower priority than normal;
Thread_priority_highest is two points higher than normal;
Thread_priority_idle: set the priority base to 1;
Thread_priority_lowest has two lower priorities than normal ones;
Thread_priority_time_critical: set the priority base to 15;
0. Set the priority to normal.
Many other parameters can be 0 or omitted.
★This instance creates a thread with the original code as follows:
Uint proc1 (lpvoid PARAM) // create a function in the format required by the first parameter.
{
Int I;
For (I = 0; I = 1000; I ++) // because I = 1000, this program will die.
{
: Messagebeep (0 );
}
Return 0;
}
Void cmy111dlg: oncancel () // create a new thread for this function in another button.
{
Hwnd = getsafehwnd (); // obtain the handle of the current window for the function to use.
Afxbeginthread (proc1, hwnd, 0); // call with normal priority.
// Proc1 (afxgetmainwnd ()-> m_hwnd );
}
As shown in the preceding example, if you use this method to run the damn program, the main window can be moved.
Proc1 (afxgetmainwnd ()-> m_hwnd) although the program can run, the main window cannot be moved.
This code belongs to the 7ctt and is successfully debugged.