Kategorie: Programmierung

1. TComboBox.OnKeyPress is fired TWICE if style is not csDropDown or csSimple. Just drop a Combo and a Label. In the Combo OnKeyPress…

> If a TEdit is droped inside a TDrawGrid the edit control’s OnChange event is > never triggered even if the text was…

MonthCalendar days bold Tage Fett Markieren Kennzeichnen [code lang=”delphi”]procedure TForm1.MonthCalendar1GetMonthInfo(Sender: TObject; Month: Cardinal; var MonthBoldInfo: Cardinal); var begin MonthCalendar1.BoldDays([1,8], MonthBoldInfo); end; [/code] [1,8]…

[code lang=”delphi”]procedure WndProc(var Message : TMessage); override; procedure TForm1.WndProc(var Message : TMessage); begin if Message.LParam = Longint(Label1) then begin if (Message.Msg = CM_MOUSELEAVE)…

[code lang=”delphi”]procedure TForm1.Button3MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); const SC_DragMove = $F012; begin Begin ReleaseCapture; Panel1.perform(WM_SysCommand, SC_DragMove, 0); End; end;[/code]…

It’s my guess that your problem is in the SetEnabled method. You must’ve re-defined FEnabled in your derived component otherwise you would be…

TEdit does not like that you launch a dialog box from the OnEnter. In D1 you loose the caret and the selection highlighting…

ransparent Background for Controls (from Peter Below) > > how would I make a component with a transparent background? > e.g. it shows…

In article , Robert wrote: > WMEraseBkgnd message fills the TWincontrol with the brush color of the > control, that makes the control…