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WM_SETFOCUS和WM_KILLFOCUS、WM_GETDLGCODE

procedure WMSetFocus (var Message: TWMSetFocus); message WM_SETFOCUS; //获得焦点

procedure WMKillFocus (var Message: TWMKillFocus); message WM_KILLFOCUS; //失去焦点

 

procedure WMGetDlgCode (var Message: TWMGetDlgCode); message WM_GETDLGCODE;
WM_GETDLGCODE = $0087;
发送此消息给某个与对话框程序关联的控件,widdows控制方位键和TAB键使输入进入此控件
通过响应WM_GETDLGCODE消息,应用程序可以把他当成一个特殊的输入控件并能处理它
 

procedure CMEnter (var Message: TCMGotFocus); message CM_ENTER;

procedure CMExit (var Message: TCMExit); message CM_EXIT;

procedure WMPaste (var Message: TWMPaste); message WM_PASTE;

procedure WMCut (var Message: TWMCut); message WM_CUT;

WM_SETFOCUS和WM_KILLFOCUS、WM_GETDLGCODE