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By Dan Appleman
The most important to having access to the facility of each working process is its program programming interface (API). visible uncomplicated can entry merely a part of the home windows API with no exact aid. to jot down the main robust attainable courses, VB programmers have to paintings with all the API. the large challenge for VB programmers in attempting to accomplish that is that each one of the to be had documentation at the home windows API is written for C++ programmers. In different phrases, the instructions for utilizing the API is written in a language that VB programmers do not comprehend. With a writing variety that mixes technical competence, humor, and a bit "attitude," Appleman proves once more during this long-awaited supplement to his prior bestseller, visible uncomplicated Programmer's consultant to the Win32 API, that studying complex know-how can (and should still) be enjoyable.
Read or Download Dan Appleman's Win32 API Puzzle Book and Tutorial for Visual Basic Programmers PDF
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Additional resources for Dan Appleman's Win32 API Puzzle Book and Tutorial for Visual Basic Programmers
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Windows 95/98 quietly ignores the error, leaving you with an empty string and the uncertain feeling that somewhere your memory has been corrupted in a way that will be impossible to track down. < previous page page_48 next page > < previous page page_49 next page > Page 49 Puzzle 11 Registry Games, Part 1 Reading the system registry is one of the most common tasks that Visual Basic programmers attemptand one of the most frustrating. The registry is a hierarchical database that looks something like a file system.
The type breaks down as follows: LP Long (far) Pointer C Constant, meaning that the API function does not change the contents of the string T Varies depending on entry point. The string will be ANSI for the ANSI entry point, Unicode for the Unicode entry point. dll" Alias "LoadIconA" _ ( ByVal hInstance As Long, _ ByVal lpIconName As String) As Long 1 Rectangular, you ask? Icons are always rectangularbut portions of an icon can be made transparent, so they may seem to have many different shapes.
Caption = "No - it's not VB" End If End Sub For some reason, this program never detects that it is running within the Visual Basic environment. Your job is to figure out why. ico) or as resources within Windows executables and dynamic link libraries. The Windows system provides a number of built-in icons that can be loaded using the LoadIcon function. This function is defined as follows under the Win32 documentation: HICON LoadIcon( HINSTANCE hInstance, // handle of application instance LPCTSTR lpIconName // icon-name string or icon resource identifier ); This looks quite simple.