NET Framework Solution In Search of the Lost Win32 API phần 8 pot

... re−create the MAKE_HRESULT() macro for other Win32 API function calls. The third approach is the one used in the example. It creates functions the emulate both of the macros. Listing 14.3 shows the ... SizeConst=Functions.DD_ROP_SPACE)] public UInt32 []dwRops; The magic of this solution is all in the [MarshalAs] attribute. However, it begins with a correct defi...

Ngày tải lên: 12/08/2014, 21:20

... might find other types of printers lacking in some areas. Creating the Wrapper DLL The wrapper DLL does most of the work of retrieving the printer information from the Win32 API in this case. There ... experiment with some of the console functions presented in this chapter. Chapter 7 continues the search for ways to plug the holes in the .NET Framewor...

Ngày tải lên: 12/08/2014, 21:20

... checking using the methods in this namespace, but it appears that the OperatingSystem class relies on the GetVersion() Win32 API call instead of the GetVersionEx() Win32 API call to obtain the ... code includes an encapsulated version of the code used to gain access to the security descriptor in the form of the GetFileSD() function. Listing 8. 3: Gaining A...

Ngày tải lên: 12/08/2014, 21:20

... possible. Understanding the Effects of Pointers One of the first issues that you’ll face when working with the Win32 API is the use of pointers the Win32 API uses them by the gross. You’ll find pointers as ... 421 List of Listings 422 Chapter 1: Overcoming Holes in the .NET Framework 422 Chapter 2: Working with Win32 API Data 422 Chapter 3: Accessing the...

Ngày tải lên: 12/08/2014, 21:20

... Imports statement to the beginning of the file. 5. Working with the Win32 API Working directly with the Win32 API means locating the various functions you need—they’re not all in the same DLL. In many cases, ... main DLLs, you’ll find that you can patch quite a few of the obvious support holes in the .NET Framework. Types of Win32 Access There are two...

Ngày tải lên: 12/08/2014, 21:20

... on the GetWindowText() function to display the name of the window in a textbox on the dialog. The use of an IntPtr as one of the inputs is hardly surprising, because it contains the handle to the ... call the days of the week or the months of the year? The example in this section of the chapter is meant to augment what the .NET Framework alread...

Ngày tải lên: 12/08/2014, 21:20

... haven’t discussed many of the buttons on the left side of the Windows Media Player yet. You’ll find that several of them enable you to find media on the Internet. The main Internet button is Media ... problems—you obtain information on every aspect of the Win32 API call. Tip Many other developers are struggling with the same problems that you face in working with...

Ngày tải lên: 12/08/2014, 21:20

... the wave device. Stopping the playback means not only stopping the sound, but also moving the pointer back to the beginning of the data. When you play the sound again, Windows will begin at the ... file. The WAVE entry tells what type of RIFF data the file contains—wave (digitized) audio. The fmt entry marks the beginning of the format data, while the data en...

Ngày tải lên: 12/08/2014, 21:20

... determines which axes of the input device are affected by the ramp. The Timing tab tells how long the effect lasts and determines if there’s a delay in starting it. Finally, the General tab contains ... for all three. The example changes the x− and y−coordinates to 0.300000 as shown in the following listing (you’ll find the complete listing in the Box4.X file on t...

Ngày tải lên: 12/08/2014, 21:20

... confusion on the part of other developers and increases the work required to use the Win32 API, without much benefit to the originator. 1. Verify the type of variable that a handle or other pointer ... using a single bit path. Instead of transmitting the data in packets, the sender transmits the data continuously. This technique works well in S 410 List of Side...

Ngày tải lên: 12/08/2014, 21:20