Image Filter Design and Implementation Based on API

In this paper, Visual Basic development platform to implement the general professional image software can only be used to complete the image filter processing, the main application the power of Windows API functions, on the one hand improve the ability of VB´s advanced application programming, the other hand, image processing also a new understanding of the field. In fact, the Visual Basic program development environment through the use of API Viewer is simple and convenient way to call the API function, not only provides a completely different programming approach in the Windows environment, but also the user into the core of operating system for advanced programming a way, it shows the VB language specific features and attributes of other programming language can not be completed. The design is based on API functions Get Pixel and Set Pixel features and functions, first introduced the general principles of VB interface design, and the image filter interface design in detail of the VB form, then combined Get Pixel and Set Pixel API functions are introduced in detail statement and call the method, then introduces the VB method in the basic color settings, and preparation of the corresponding event procedure code to implement a variety of monochrome images and mixed color filter processing, the system user-friendly, readable, concise efficient, the last run result is correct, to achieve design goals, VB platform allows users to experience the powerful function of Windows API programming skills and capability.