Articles:

• DsgnIntf.dcu not found (Delphi 2 - 5) (819)
• Msg 'Canvas does not allow drawing' (314)
• List of Exceptions (223)
• Arrow keys do not generate WM_KEYDOWN (190)
• A listbox in a cell of a stringgrid (186)
• Threads in Delphi 6 (172)
• Have a TMemo/ TRichEdit scroll to the cursor position (163)
• Obtaining and installing RXLib (155)
• Avoiding Application.ProcessMessages (138)
• Threads and the VCL in DLLs (Delphi 6) (126)
• Delphi 5: designtime code and runtime code (123)
• Delphi doesn't process WM_ENDSESSION (118)
• Access the current row/column of a TMemo (118)
• ListBox.Items.Add is slow and flickers (115)
• RxLib Installation: Message 'Unable to locate *.dpl file' (113)
• Hide an application's task-bar icon (Windows '95/NT 4) (111)
• When does Application.OnIdle() get executed? (109)
• Changing the TDBNavigator button images (107)
• Disable or hide the tabs of a TPageControl (106)
• resourcestring replaces LoadStr() (105)
• Create smaller EXEs with Delphi 3 (100)
• TScreen (96)
• Start up an application minimized (96)
• What is 'Sender:TObject'? (95)
• Convert between a DFM and a TXT file (90)
• Transparent color in glyphs (bitmaps) (90)
• Buttons with wrapped text - use a TBitBtn (90)
• Application.Terminate or Halt() ? (89)
• How to create a datamodule/ form at runtime from a DFM (88)
• My control flickers when it gets repainted! (88)
• Paint the form with a tiled bitmap (87)
• Detect if Delphi is running (85)
• Memory leak in TCheckListBox (85)
• A global exception handler (85)
• Selecting multiple files in TOpenDialog (85)
• Best components for handling ZIP files (84)
• Freeing a TList (84)
• RTTI - determining property information (84)
• Making Enter key act as Tab (83)
• Opening system menu stops processing messages (WM_TIMER or WM_USER) (83)
• UnDo in a memo field (83)
• Trap mouse activity over icon in system icon tray (82)
• Detect whether your program runs in the IDE (82)
• Customized Standard Dialogs with VCL in run-time package (82)
• Calling base class constructors and destructors (81)
• Dragging components at run-time (81)
• Open a local HTML file with Delphi 4's HTML component (79)
• How do I stop my TEdit control beeping? (79)
• How to add DblClick event? (79)
• Storing color values in the registry/ INI files (79)
• TMultiLang and TQuickReports preview (79)
• Unicode and MCBS (79)
• How to check or uncheck a TCheckBox without causing an OnClick event (78)
• Center a Form efficiently (78)
• Working with multiselect grids (78)
• TCheckBox inside a TRichEdit (77)
• Streaming out multiple pictures (any raw data) (76)
• IS-Operator does not function in a DLL (75)
• Get some text in a TRichText object to blink (75)
• Word wrapped TButton (75)
• About setting pointers to NIL after freeing memory (74)
• Scroll your form with PgUp and PgDn (74)
• Create a form knowing the class name only (74)
• Accessing a TForm from a package (73)
• Change text in a OnChange event without stack overflow (73)
• Have an animated icon when the form is minimized (73)
• Setting read-only columns in StringGrid (73)
• Over which component is the mouse currently? (72)
• Show/ Hide a component by name (72)
• Change the Window Style for a control (69)
• AnsiLowerCase() faster than LowerCase() (69)
• When are properties set at construction time? (69)
• How to change existing forms' ancestor types (69)
• When and why is an EFCreateError exception raised? (69)
• Have designer save changes after using your component editor (68)
• When is 'protected' useful for a method or member? (67)
• Highlight a component when the mouse moves towards it (65)
• Create a component that cannot be dropped on a form (65)
• Determine the position of nonvisual components at design time (62)
• Have a menu in any form (62)
• From what should you descend your component? (62)
• RTTI - determining property information (58)
• When is my control's window handle created? (57)

Memory leak in TCheckListBox I just found a memory leak in TCheckListBox (while using Delphi 3). Every time you check an item at runtime, a wrapper is created in routine TCheckListBox.GetWrapper in CheckLst.pas. These wrappers were supposed to be freed in procedure TCheckListBox.DestroyWnd; but this procedure is never called. Therefore all these pointers will never be freed. The workaround to this is to manually clear the listbox when the form is destroyed: procedure TForm1.FormDestroy(Sender: TObject); begin CheckListBox1.Items.Clear; inherited; end;