The most commonly used image file formats how to store images since I bought my first PC 14 years ago, I have been interested in storing the complex information in the data streams composed of 1 and 0 of computers. What started my attention was the
# Include # include // copy the lprect part of the specified hdc to the dstfile (BMP file format) bool savehdctofile (HDC, lprect, and lpctstr dstfile) {int width = lprect-> right-lprect-> left; int Height = lprect-> bottom-lprect-> top; HDC
In the previous articles, I have introduced how to use GDI + for drawing and made an example. In this article, I will introduce how to use a tool similar to windows for drawing.
I personally think that if you want to create a powerful drawing tool,
1. BMP file Composition
A bmp file consists of four parts: File Header, bitmap information header, color information, and graphic data. The file header mainly containsThe file size, file type, image data deviation from the file header length, and
BMP is an image file format unrelated to hardware devices and is widely used. It uses a bit ing storage format. In addition to image depth options, it does not use any compression. Therefore, bblp files occupy a large amount of space. The image
Bmp
BMP (full name bitmap) is a standard image file format in the window operating system
Can be divided into two categories: device-related bitmaps (DDB) and device-independent bitmaps (DIB), which are very widely used.
It uses bit-mapped
Bitmap files are divided into four parts. The first part is the bitmap file header, which includes the bitmap file name, bitmap size, and the offset of the bitmap data from the file header. The next step is the bitmap information header,
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Tutorial
I found a simple and easy-to-understand tutorial, and forwarded it so that some basic colleagues could learn about
--use common method to display BMP bitmap, the memory is big, slow, in the shape shrinks, the distortion is serious, in the low color bit number of devices display high color digit figure graphics when the distortion is big. This article uses the
In the previous articles, I have introduced how to use GDI + for drawing and made an example. In this article, I will introduce how to use a tool similar to Windows for drawing.I personally think that if you want to create a powerful drawing tool,
How to display Bitmap Under VC
Summarize the usage of Bitmap.
At the beginning of this article, I would like to introduce some knowledge about bitmap and some useful bitmap structures.
1. The bitmap structure is as follows:
---- 1. BMP file
The BMP bitmap is displayed in a common way, which occupies a large memory and is slow. When the image is reduced, the distortion is severe, and the image with a high color digit is displayed on a device with a low color digit. This article uses the
In rare cases today, we need to study the image file format unless in some specific scenarios. Here, I made such a small tool first. Currently, the BMP, ICO, and cur file formats can be displayed. In fact, as long as you know the format definition
Guidance:-- Display BMP bitmap in common mode, which occupies a large memory and is slow. When the image is reduced, the distortion is serious, A large distortion occurs when a high-color figure is displayed on a low-color device. This article uses
Talking about BMP, perhaps we will not be unfamiliar, our computer stored in a lot of files are in this format, many friends may know that BMP is a graphic asking price, but what is the specific BMP file? Let's get to the next step.
What file is
Many websites often use a verification code technology to prevent DoS attacks when receiving HTTP input. Simply put, before or at the same time, the server sends a small image to the client, which is usually composed of random numbers or letters (in
RTF is a very popular file structure. Many text editors support it and VB and other development tools.
It even provides the richtxtbox control. Programmers who write common tools should consider
Add the read/write function of the RTF file to the
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