Articles:

• Avoiding Application.ProcessMessages (18937)
• Threads and the VCL in DLLs (Delphi 6) (19085)
• Application.Terminate or Halt() ? (18232)
• Msg 'Canvas does not allow drawing' (45394)
• Delphi 5: designtime code and runtime code (16869)
• Detect whether your program runs in the IDE (12752)
• Get some text in a TRichText object to blink (11617)
• Create a component that cannot be dropped on a form (10895)
• When and why is an EFCreateError exception raised? (5842)
• DsgnIntf.dcu not found (Delphi 2 - 5) (51145)
• List of Exceptions (20982)
• Threads in Delphi 6 (20852)
• Obtaining and installing RXLib (19063)
• Have a TMemo/ TRichEdit scroll to the cursor position (18052)
• Setting read-only columns in StringGrid (13162)
• TCheckBox inside a TRichEdit (12473)
• A global exception handler (12328)
• Change the Window Style for a control (11790)
• Opening system menu stops processing messages (WM_TIMER or WM_USER) (11593)
• Freeing a TList (11360)
• Create a form knowing the class name only (11008)
• Determine the position of nonvisual components at design time (10912)
• Show/ Hide a component by name (10722)
• Delphi doesn't process WM_ENDSESSION (20481)
• Hide an application's task-bar icon (Windows '95/NT 4) (17517)
• ListBox.Items.Add is slow and flickers (17220)
• A listbox in a cell of a stringgrid (16941)
• Arrow keys do not generate WM_KEYDOWN (16462)
• Disable or hide the tabs of a TPageControl (16155)
• Detect if Delphi is running (14883)
• Convert between a DFM and a TXT file (14221)
• resourcestring replaces LoadStr() (14210)
• What is 'Sender:TObject'? (13996)
• TScreen (13974)
• Start up an application minimized (13969)
• How to create a datamodule/ form at runtime from a DFM (13919)
• Access the current row/column of a TMemo (13744)
• Open a local HTML file with Delphi 4's HTML component (13629)
• RxLib Installation: Message 'Unable to locate *.dpl file' (13494)
• Calling base class constructors and destructors (13280)

Change the Window Style for a control The CreateParams method is used to set up the window style and all the other arguments that are passed to CreateWindowEx to create the control's To change the window style use something like this which creates a window with or without a vertical scroll bar. procedure TMyControl.CreateParams(var Params: TCreateParams) ; begin inherited CreateParams (Params) ; if IWantAScrollBar then Params.Style := Params.Style or WS_VSCROLL else Params.Style := Params.Style and not WS_VSCROLL ; end;