一个支持Twain输入设备输入的DLL库文件，并包含一个的范例。-an input device support Twain imported DLL libraries, and includes an example.

从BMP文件中装入位图并显示 the bmp file has four sections. the first is bitmapfileheader. this contains the bitmap file signature, the size of the bitmap and the offset to the array of bits that define the bitmap image. the next section is the bitmapinfoheader

图形设备接口（GDI，Graphics Device Interface）的主要目标之一是支持在输出设备（如视频显示器、打印机和绘图仪）上的与设备无关的图形。 GDI通过将应用程序与不同输出设备特性相隔离，使Windows应用程序能够毫无问题地在Windows支持的任何图形输出设备上运行。-Graphics Device Interface [GDI, Graphics Device Interface] one of the main objectives are to support the