Tag Archives: API

Quick tip: Use pinvoke.net to get information about API functions for use in C#

Posted on January 19, 2018 by Rod Stephens

Platform Invocation Services (pinvoke) lets allows managed .NET code call unmanaged API functions that are implemented in a DLL. The functions in a DLL are exposed via an Application Programming Interface (API). The enormous .NET runtime library wraps many API … Continue reading →

Posted in API | Tagged API, API declarations, API functions, C#, C# programming, declarations, example, example program, pinvoke, pinvoke.net, Windows Forms programming | Leave a comment

Use a timer to make a form TopMost or BottomMost in C#

Posted on November 16, 2017 by RodStephens

The example Make a form TopMost or BottomMost in C# uses one method for making a form bottommost. It overrides the form’s WndProc method and looks for the message WM_WINDOWPOSCHANGING. When it finds that message, the program uses the SetWindowPos … Continue reading →

Posted in API, controls, forms, user interface | Tagged API, BottomMost, C#, C# programming, controls, example, example program, forms, on bottom, on top, SetWindowPos, timer, TopMost, user interface, Windows Forms programming, WM_ACTIVATE, WM_MOVE, WM_PAINT | 2 Comments

Make a form TopMost or BottomMost in C#

Posted on November 15, 2017 by Rod Stephens

Keeping a form on top of other windows is simple. Just set the form’s TopMost property to true. Keeping a form below other windows is harder. To do that, the program must override its WndProc method, look for messages that … Continue reading →

Posted in API, controls, forms | Tagged API, BottomMost, C#, C# programming, controls, example, example program, forms, on bottom, on top, SetWindowPos, TopMost, user interface, Windows Forms programming, WM_ACTIVATE, WM_MOVE, WM_PAINT, WndProc | 1 Comment

Display system metric values with descriptions in C#

Posted on October 26, 2017 by Rod Stephens

The example Get system metrics in C# shows how to get system metrics, but the the metrics’ terse names make the results hard to understand. This example displays descriptions of the metrics in addition to their values. Some of the … Continue reading →

Posted in API, system | Tagged API, border height, border thickness, border width, C#, C# programming, example, example program, GetSystemMetrics, metrics, system, system metrics, SystemMetric, tooltips, Windows Forms programming | Leave a comment

Get system metrics in C#

Posted on October 25, 2017 by Rod Stephens

The GetSystemMetrics API function returns system metrics, values that give dimensions used by the system such as the default size of icons and the thickness of a resizable window’s borders. For example, the highlighted line in the picture on the … Continue reading →

Posted in API, system | Tagged API, border height, border thickness, border width, C#, C# programming, example, example program, GetSystemMetrics, metrics, system, SystemMetric, Windows Forms programming | 1 Comment

Book Errata Page: The C# Helper Top 100

Posted on September 4, 2017 by RodStephens

This is the errata page for my book The C# Helper Top 100, The 100 most popular posts at csharphelper.com. If you find mistakes, please post them here in the Leave a Reply box at the bottom of the page. … Continue reading →

Posted in .NET, algorithms, books, C#, C# programming | Tagged .NET, algorithms, animation, API, books, C#, C# Helper, C# programming, classes, clipboard, combinatorics, cryptography, curve fitting, dialogs, drag and drop, drawing, events, example, example program, Excel, files, fractals, FTP, graphics, image processing, interop, interoperability, mathematics, multimedia, Office, printing, Rod Stephens, serialization, system, threading, tips, tools, Windows Forms programming | 2 Comments

Book Discussion Page: The C# Helper Top 100

Posted on September 4, 2017 by RodStephens

This is a discussion page for my book The C# Helper Top 100, The 100 most popular posts at csharphelper.com. Please post questions, thoughts, and suggestions here in the “Leave a Reply” box at the bottom of the page. I … Continue reading →

Table of Contents: The C# Helper Top 100

Posted on September 4, 2017 by RodStephens

This is a brief summary of the book’s table of contents. Introduction Part I. Serialization 1. Read a CSV File into an Array (1) 2. Use JSON to Serialize and Deserialize Objects (49) Part II. Graphing 3. Draw a Graph … Continue reading →

New Book: The C# Helper Top 100

Posted on September 4, 2017 by RodStephens

I’m happy to announce my latest book, The C# Helper Top 100, The 100 most popular posts at csharphelper.com. It describes the 100 most popular posts on the C# Helper web site. This is my 32nd book and my second … Continue reading →

Posted in .NET, algorithms, books, C#, C# programming | Tagged .NET, algorithms, animation, API, books, C#, C# Helper, C# programming, classes, clipboard, combinatorics, cryptography, curve fitting, dialogs, drag and drop, drawing, events, example, example program, Excel, files, fractals, FTP, graphics, image processing, interop, interoperability, mathematics, multimedia, Office, printing, Rod Stephens, serialization, system, The C# Helper Top 100, threading, tips, tools, Windows Forms programming | Leave a comment

Randomly change the desktop picture in C#

Posted on January 23, 2017 by Rod Stephens

The example Set the Windows desktop picture in C# shows how to display an image on the desktop. This example periodically changes the desktop picture to a randomly selected image file picked from a directory. Note that recent versions of … Continue reading →