Specifies the outcome of the function. It is 0 if there is not enough memory to create the message box.
Parameters
lpszText
Points to a CString object or null-terminated string containing the message to be displayed.
lpszCaption
Points to a CString object or null-terminated string to be used for the message-box caption. If lpszCaption is NULL, the default caption “Error” is used.
nType
Specifies the contents and behavior of the message box.