Adding and Removing Nodes, Node Images, TTreeNode.Level, Preventing Duplicates, TTreeNode.Data, BeginUpdate, EndUpdate, ItemID - Finding Nodes, Pre-order and Post-order recursive tree traversals, Editing TreeNode.Text, Tree Sorting, Linking a TreeView and a ListView, Drag and Drop
Shaping a Form around a Bitmap(Delphi Tutorial)
We have already done a tutorial on how to create non-rectangular windows. This tutorial shows how to create a form that is shaped around a bitmap. Like the previous tutorial it uses the SetWindowRGN function. The clever part here is how the region is created.
Dynamically Loading DLL's
Accessing and using DLL's in Delphi is easy (see Adding forms to a DLL) in this tutorial I would like to expand on that so as we actually control when the DLL is loaded into memory, and are also responsible for removing it from memory when we are finished using it.
How to Move Controls and Save their Positions(Delphi Tutorial)
The aim of this tutorial is to show, how you can allow the user to move any control, with the minimum of coding on your part. It also shows how to save these new positions to registry so that next time the application is started all the controls will appear in the position they where left in last time.
How to Implement Weird Shaped Windows(Delphi Tutorial )
his is probably one of the lesser known Delphi and windows functions. The ability to have windows of shapes other than rectangular. This may sound difficult to do but in practice it is very easy.
Restricting Minimum and Maximum window sizes in Delphi(Delphi Tutorial)
This method of restricting a window or controls size is now redundant
Using Drag and Drop in Delphi(Tutorial)
Due to the graphical nature of Windows the majority of operations can be performed solely with the mouse. One operation that is often useful is for the user to be able to drag an object from one position to another. Fortunately for us, Borland have made this facility easy to implement for the Delphi developer. The tutorial will show you how to do this, by explaining and providing sample code to drag items from one ListBox to another.
Writing a URL Label(Delphi Component Tutorial)
In this Delphi programming tutorial we will show you how to a create a new Delphi component the URL Label.
How to get operating system version information
The Windows API provides some version information that is common to all 32 bit Windows operating systems. Delphi's run time library (RTL) makes access to this information very straightforward. We will begin our exploration by seeing how to get the information from the Windows API.
How to call Delphi code from scripts running in a TWebBrowser
When writing programs that use the TWebBrowser control as part of the user interface I've sometimes needed to respond to user interaction with the control. The official way to do this is to extend the web browser's external object, and this is the technique we will use in this article.
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