08/03/03 12:59:40
なんで誰も>>915～>>932の件の正解を書かない？
一例として、WM_CTLCOLOR*** は「HBRUSHを直接返さなければならない」（DWL_MSGRESULTは禁止）
だから64bitはINT_PTRじゃなきゃまずいんだよ。
HBRUSHの中身が64bitになる実装は存在しないとかいうのは無しね。
If the dialog box procedure processes a message that requires a
specific return value, the dialog box procedure should set the
desired return value by calling
SetWindowLong(hwndDlg, DWL_MSGRESULT, lResult) immediately before
returning TRUE. Note that you must call SetWindowLong immediately
before returning TRUE; doing so earlier may result in the
DWL_MSGRESULT value being overwritten by a nested dialog box
message.
The following messages are exceptions to the general rules stated
above. Consult the documentation for the specific message for
details on the semantics of the return value.
WM_CHARTOITEM
WM_COMPAREITEM
WM_CTLCOLORBTN
WM_CTLCOLORDLG
WM_CTLCOLOREDIT
WM_CTLCOLORLISTBOX
WM_CTLCOLORSCROLLBAR
WM_CTLCOLORSTATIC
WM_INITDIALOG
WM_QUERYDRAGICON
WM_VKEYTOITEM