Throw New ApplicationException('Could not _Īdd the following code behind a button’s click event: Private Sub Button2_Click(sender As Object, _įileName = Path.Combine(Application.StartupPath, _ 'user32.dll' Alias 'LoadCursorFromFileW' _Īdd the next Function: Private Shared Function CreateCursor(ByVal _

We need to make use of the specific methods inside the specific Windows DLL files to do some nice stuff with the Windows Cursor.Īdd the namespaces necessary for the Windows API as well as to be able to read files: Imports Īdd the LoadCursorFromFile API Function: Private Declare Unicode Function LoadCursorFromFile Lib _ The methods of the programs are locked away in these files, and these methods make your applications work. These files are dynamically linked with the Operating System to run the program associated with it. The Windows system, or any system for that matter, is made up of a bunch of files, called DLLs amongst others. Then, you get the functions that run in the background, which you usually do not have to care about: keeping track of memory usage, obtaining a list of running programs. You have to remember that, in running Windows, you are indirectly executing code exposed by the Windows Operating System.Ī simple action, such as opening a file, executes the desired functionality needed for the file to be run. Any good program exposes some sort of API that can be used in other applications. The term API means Application Programming Interface. This technology is known as the Windows API. The Windows APIīefore going into depth about the cursor object, I need to speak about some of the background technology used. The cursor functions enable applications to create, load, display, animate, move, confine, and destroy cursors. When the user moves the mouse, the system moves the cursor accordingly. In the remainder of this overview, the term mouse refers to any pointing device. CursorsĪccording to MSDN, a cursor is a small picture whose location on the screen is controlled by a pointing device, such as a mouse, pen, or trackball. Today, I would like to talk about the Cursor object and how you can utilize it properly from your Visual Basic program.

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