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| unit TRM_DateTimePicker;
interface
uses Windows, Messages, SysUtils, Classes, Controls, Forms, ComCtrls, Dialogs, ExtCtrls, CommCtrl;
type TTRM_DateTimePicker = class(TDateTimePicker) private FOnMouseLeave: TNotifyEvent; FOnMouseEnter: TNotifyEvent;
procedure CMMouseEnter(var msg: TMessage); message CM_MOUSEENTER; procedure CMMouseLeave(var msg: TMessage); message CM_MOUSELEAVE;
procedure CNNotify(var Message: TWMNotify); message CN_NOTIFY; protected procedure DoMouseEnter; dynamic; procedure DoMouseLeave; dynamic;
procedure DoDropDown; dynamic; public published property OnMouseEnter: TNotifyEvent read FOnMouseEnter write FOnMouseEnter; property OnMouseLeave: TNotifyEvent read FOnMouseLeave write FOnMouseLeave;
property WeekNumbers; end;
procedure Register;
implementation
procedure Register; begin RegisterComponents('TRM', [TTRM_DateTimePicker]); end;
procedure TTRM_DateTimePicker.CMMouseEnter(var msg: TMessage); begin DoMouseEnter; end;
procedure TTRM_DateTimePicker.CMMouseLeave(var msg: TMessage); begin DoMouseLeave; end;
procedure TTRM_DateTimePicker.CNNotify(var Message: TWMNotify); begin if Message.NMHdr.code = DTN_DROPDOWN then begin if Self.WeekNumbers then DoDropDown; end; inherited; end;
procedure TTRM_DateTimePicker.DoMouseEnter; begin if Assigned(FOnMouseEnter) then FOnMouseEnter(Self); end;
procedure TTRM_DateTimePicker.DoMouseLeave; begin if Assigned(FOnMouseLeave) then FOnMouseLeave(Self); end;
procedure TTRM_DateTimePicker.DoDropDown; const MCM_GETMAXTODAYWIDTH = MCM_FIRST + 21; var Style: LongInt; hDTP: THandle; r: TRect; intTodayWidth: Integer;
cname: array [0 .. 256] of Char; begin
inherited;
hDTP := DateTime_GetMonthCal(Self.Handle);
Style := GetWindowLong(hDTP, GWL_STYLE); SetWindowLong(hDTP, GWL_STYLE, Style or MCS_WEEKNUMBERS);
r := Rect(0, 0, 0, 0); SendMessage(hDTP, MCM_GETMINREQRECT, 0, LongInt(@r));
intTodayWidth := SendMessage(hDTP, MCM_GETMAXTODAYWIDTH, 0, 0);
if intTodayWidth > r.Right then r.Right := intTodayWidth;
GetClassName(GetParent(hDTP), cname, sizeof(cname)); if AnsiSameText(cname, 'DropDown') then begin hDTP := GetParent(hDTP);
inc(r.Right, 6); inc(r.Bottom, 6); end;
MoveWindow(hDTP, r.Left, r.Top, r.Right - r.Left, r.Bottom - r.Top, true);
end;
end. |