Paul's Delphi components

Paul's Delphi components

Components are here as-is without any help, YET. Please take patience. If you have any questions or comments, send me mail.

TAlignEdit

Delphi standart TEdit with Align property added.

TAlignBitBtn

Delphi standart TEdit with Align property added.

TAlignCombo

Delphi standart TEdit with Align property added.

TMenuSpeedButton

TSpeedButton with attachment to TMenuItem. Clicks on TMenuSpeedButton are forwarded to OnClick event of attached menuitem. After enable/disable/check/uncheck of menu item, you need to call ClickNotify or EnableNotify to reflect checks or disabled items on associated buttons.

TEditListView

Standart TListView with two features added:

Lines: TStrings (!) property added. Inserts or deletes from Lines property are reflected on Items property and vice-versa.
Keys as Ins, Del, Enter and Alt-Enter call their equivalent events OnItemInsert, OnItemDelete, OnItemEnter and OnItemProperties. In addition, there are EditListView's methods ItemInsert, ItemDelete, ItemEnter and ItemProperties. These methods are without parameters and are usefull for call they from OnClick eventes of Buttons or MenuItems.

TNotifyIcon

Is clasic notify-icon in system tray. Attachment to popup menu, hint and icon is possible, of course. Icon image can be, in addition selected by ImageIndex property from attached imagelist.

TShellDragDrop

TShellDragDrop is TPanel descendant. You can put it under controls, that accepts drag&drop files from explorer. Use of this component is quite simple. Set AcceptFiles property to true and write OnDropFiles handler.

TThreadProc

Is visual encapsulation of multi thread API functions. I think, TThreadProc is better than Delphi original TThread. How to use TThreadProc? Write OnRun handler and set Active property to true. Be sure that you must use Synchronize method and OnSynchronize event to work with visual components in running thread.

You cannot call visual components from OnRun event, but you can call Synchronize method from OnRun and OnSynchronize event will be then called on Delphi application main thread. OnTerminate is called instantly when thread terminates (correctly on incorrectly by exception-raise). When unhandled exception occurs in OnRun handler thread is terminated and OnException is called.OnStop and OnContinue events are called when thread is suspended or resumed by Stop and Continue methods. All events except OnRun are synchronized and thus VCL safe.

TDirMonitor

If you nedd to monitor file changes in file-system, then use TDirMonitor. Set Path property and write OnChange handler. In Change property you can specify what to monitor (FileNames, DirNames, Attrs...).

TFileEnumerator

Weary FindFirst-FindNext-FindClose loop can be substitued by TFileEnumerator. By Execute method you can enumerate files and, if Recurse property is true, also files in subdirectories. OnFile event is called for each enumerated file, and AfterDir and BeforeDir events are called upon recurse directory enumerating. Executing can be stoped by Break method call.

TWindowHandle

Some times, if you work with windows API, you need to create specific window handle. TWindowHandle is little encapsulation over windows HWND. See the source code for more details.

TReceiveBuffer

If you are using Delphi winsocket components and you need to transfer large blocks of data over IP network this component may by useful for you. Please wait for demo application or send me your questions.

TFolderDialog

TFolderDialog is encapsulation over SHBrowseForFolder API function. Use it as (for example) TOpenDialog.

TDBDateTimePicker

TDBDateTimePicker is data-aware descendant of TDateTimePicker.

TDBCheckListBox

TDBCheckListBox is data-aware descendant of TCheckListBox.

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