Conversion of BOOL and bool Note: True is not necessarily 1, such bool will cause the value of the control checkbox to zero

A bool value from a configuration file, network, or other means, when assigned to bool, the discovery of true is not necessarily 1

There may be other errors causing this value to be wrong. Although it does not affect logic, it still shows that there are errors in other areas of logic.

To make a judgment, do not let values other than 0 and 1 enter bool,

Otherwise, the value of the control checkbox is returned to zero

The MFC code is as follows:

void Afxapi Ddx_check (cdataexchange* pDX, int nIDC, int& value) {... if (Value < 0 | | | value > 2) {TRACE (traceap PMSG, 0, "Warning:dialog data checkbox value (%d) out of range./n", value); Value = 0; Default to Off} ...}