描述:
hr = m_pcmdt->Exec(NULL, cmd.cmdID,
(fPrompt ? OLECMDEXECOPT_PROMPTUSER : OLECMDEXECOPT_DODEFAULT), NULL, NULL);
/*
typedef enum
{
OLECMDID_OPEN = 1,
OLECMDID_NEW = 2,
OLECMDID_SAVE = 3,
OLECMDID_SAVEAS = 4,
OLECMDID_SAVECOPYAS = 5,
OLECMDID_PRINT = 6,
OLECMDID_PRINTPREVIEW = 7,
OLECMDID_PAGESETUP = 8,
OLECMDID_SPELL = 9,
OLECMDID_PROPERTIES = 10,
OLECMDID_CUT = 11,
OLECMDID_COPY = 12,
OLECMDID_PASTE = 13,
OLECMDID_PASTESPECIAL = 14,
OLECMDID_UNDO = 15,
OLECMDID_REDO = 16,
OLECMDID_SELECTALL = 17,
OLECMDID_CLEARSELECTION = 18,
OLECMDID_ZOOM = 19,
OLECMDID_GETZOOMRANGE = 20
OLECMDID_UPDATECOMMANDS = 21
OLECMDID_REFRESH = 22
OLECMDID_STOP = 23
OLECMDID_HIDETOOLBARS = 24
OLECMDID_SETPROGRESSMAX = 25
OLECMDID_SETPROGRESSPOS = 26
OLECMDID_SETPROGRESSTEXT = 27
OLECMDID_SETTITLE = 28
OLECMDID_SETDOWNLOADSTATE = 29
OLECMDID_STOPDOWNLOAD = 30
} OLECMDID;
*/
其中一些有效而另一些无效，
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