MDI Wallpaper Delphi Component
version 6
by Robert Rossmair
______________________________________
Description
Compatibility
Current file versions
Installation
Component installationFile list
Help file installation
Component filesCopying policy
Demo application files
Note that version 5 was never released to the public.
Release 6.00.4: severe bug in ClientWndProc fixed. Some code clean-up.property Client: TWinControl;Release 6.00.2: fixed scrolling for non-TScrollingWinControl clients.
TMIDWallpaper has undergone a complete code revision. It is now compatible to the latest Delphi version, Delphi 5.
Version 6 allows to specify the windowed control to be illuminated by the TMDIWallpaper component. In earlier versions, this was fixed to the component's owner form.property FitPictureSize: Boolean;
Note that TMDIWallpapers functionality is restricted to controls which delegate the background painting to the WM_ERASEBKGND message handler.
Specifies whether the MDIWallpaper's picture is scaled to fit the Client's client area. Other than Mode=wpStretch, FitPictureSize preserves the picture's aspect ratio.Other Changes:
Four new values, wpLeft, wpTop, wpRight and wpBottom, have been added to the Mode property.Using RxWindowHook components from the RxLib ,it is now possible that a single TMDIWallpaper component handles background painting for multiple controls.
Important hint: Since TMDIWallpaper's Bitmap property has been removed in version 3.0, you are advised to save to disk any bitmap data contained in any pre-3.0 version TMDIWallpaper components and not available otherwise before installing the new version! After having installed version 3.0 or greater, you can load them into the new Picture property.
Delphi 2.0:
Select Component|Install... to install units mURLLabel.pas, CompInfo_reg.pas and MDIWallp_reg.pas.Delphi 3, 4, 5:
Note: If you have others of my components installed,
you might have to uninstall first a package named rrCmpInf.
Delphi 2.0:
| File | Description | Copying policy |
| rr.inc | global conditional compilation symbols | 1 |
| rrColors.pas | auxiliary unit | 1 |
| CompInfo_reg.pas | auxiliary unit | 1 |
| CompInfo.dfm | "Component Information" dialog | 1 |
| CompInfo.pas | auxiliary unit | 1 |
| CompInfo.hlp | help file for CompInfo | 1 |
| CompInfo.kwf | Keyword file for CompInfo.hlp | 1 |
| CopyrInf.pas | auxiliary unit | 1 |
| dclrrci3.dpk | Component Information
Delphi 3 designtime package |
1 |
| dclrrci4.dpk | Component Information
Delphi 4 designtime package |
1 |
| dclrrci5.dpk | Component Information
Delphi 5 designtime package |
1 |
| rrCmpInf.dpk | Component Information
Delphi 3 runtime package |
1 |
| rrCmpInf4.dpk | Component Information
Delphi 4 runtime package |
1 |
| rrCmpInf5.dpk | Component Information
Delphi 5 runtime package |
1 |
| mUrlLabel.pas | auxiliary unit for CompInfo | 2 |
| mUrlLabel.dcr | mUrlLabel resource file | 2 |
| mUrlLabel.res | mUrlLabel resource file | 2 |
| MDIWallp.pas | Component unit | 1 |
| MDIWallp_reg.pas | Component unit | 1 |
| MDIWallp_reg.dcr | Component resource | 1 |
| MDIWallp.hlp | Component help file | 1 |
| MDIWallp.kwf | keyword file for MDIWallp.hlp | 1 |
| MDI Wallpaper
package readme.htm |
this file | 1 |
| File | Description | Copying policy |
| MDIWDemo.dpr | demo app. project file | 1 |
| MDIWDemo.dof | demo app. project options | 1 |
| MDIWMain.dfm | demo app. main form | 1 |
| MDIWMain.pas | demo app. main unit | 1 |
| MDIWChld.dfm | demo app. MDI child form | 1 |
| MDIWChld.pas | demo app. MDI child form unit | 1 |
| HookDemo.dfm | demo app. MDI child form | 1 |
| HookDemo.pas | demo app. MDI child form unit | 1 |
Use, modification and distribution is allowed without limitation, warranty, or liability of any kind.Copying policy 2 means:
These files are freeware copyright Ahto Tanner, Moon Software.
| Version | Release Date | Remarks |
| 5 | (Dec-1999) | Never released to the public |
| 4.0.1 | 05-Jun-99 | Big transparent bitmaps caused form background painting
to be awkwardly slow in earlier versions; a fact which successfully escaped
my attention until recently, when the implementation of the GrayMapped
property required some code redesign. This is fixed in version 4.
Introduces new properties GrayMapped (a substantially enhanced variant of a feature suggested by Harald Marschalek), AutoSizeTile, TileWidth and TileHeight |
| 3.1 | 03-Feb-99 | Fixes bug which prevented the background from being updated
when the Picture property is set to nil.
Adds the Enabled property. |
| 3.0.1 | 13-Aug-98 | As a goodie for D2 users, TMDIWallpaper sets the proper (WS_EX_CLIENTEDGE) border style for the MDI client window. |
| 3.0 | 06-Aug-98 | Introduces Picture, Shift, ShiftMode and Info properties;
the Picture property replaces the Bitmap property of prior component versions.
Some code sent to me by Kristoffer Henriksson pointed me to a way how to overcome the problems which caused me to remove the Mode property in V2.0. Hence V3.0 has a Mode property again. Includes a demo application demonstrating the use of the new properties Mode, Shift, ShiftMode and ZigZag. Registers TGraphicEditor as component editor for TMDIWallpaper, thus changing the double-click behavior in design mode (due to the broken PicEdit unit this feature is not available with Delphi 3). |
| 2.1.1 | 25-Jun-98 | Cosmetic changes |
| 2.1.0 | 11-Jun-98 | Zigzag property implemented (proposed by Fabio Cavicchio) |
| 2.0.0 | 26-Apr-98 | This version fixes the bug that version 1.6 only claimed
to fix... (versions < 2.0.0 will not redraw correctly if a MDI child
window which has been moved partially out of view is scrolled in view again
(unfortunately this hadn't been tested ever).
Note that I found the values for internal constants ScrollUnit and ScrollLineSize by experimenting, so there is no guarantee that they are valid under all circumstances. However, tests did not give any hints that they are not. The Mode property has been removed. The virtual desktop of a MDI frame window is best considered as infinite in size (you may move a MDI child to the left until it's almost completely outside the window, then scroll it in view, then again move it to the left and so forth...); therefore notions like 'top', 'left', 'center' are meaningless in this context. The component now always works in a mode equivalent to Mode=wpTile in earlier versions. Bug fix: Previous versions won't redraw correctly for scrollbar positions <> 0. |
| 1.5 | 06-Mar-98 | MDIWallpaper package comes with an online-help file now.
Added transparency code by Mike Burton, with some modifications, among others:
|
| 1.4 | 03-Mar-98 | Bug fix: Prior versions will not redraw correctly on form resize if Mode property not in [wpTile, wpTopLeft]. |
| 1.3 | 09-Dez-97 | Make it work with non-MDI windows by commenting out two
lines in TMDIWallpaper.Create.
Minor fix. |
| 1.2 | 28-Nov-97 | Added Mode property values wpTopRight, wpBottomLeft and
wpBottomRight.
Some fixes. |
| 1.1 | 06-Nov-97 | Added Mode property value wpStretch |
| 1.0 | 22-Oct-97 | First public release |
If you have any comments, bug reports etc., send me an email.
Last updated January 27, 2000.