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系统结构:显示图片,GetBitsFromBitmapHandle,画图片_从字节集_GDIPlus,取验证码,释放字节流,创建字节流,GetDC,CreateCompatibleDC,GdipCreateFromHDC,GdipLoadImageFromStream,GdipGetImageDimension,GdipDrawImageRect,GdipDisposeImage,GdipDeleteGraphics,GlobalAlloc,CreateStreamOnHGlobal,GlobalLock,GlobalUnlock,GlobalFree,GdiplusShutdown,GdiplusStartup,ReleaseDC,CreateCompatibleBitmap,SelectObject,GetObjectA,GetDIBits_BimapInfo,GetDIBits,CopyMemory_BITMAPINFO,CopyMemory_BITMAPFILEHEADER,DeleteDC,DeleteObject,

======窗口程序集1
           |  |
           |  |------ __启动窗口_创建完毕
           |  |
           |  |------ _按钮_发送_被单击
           |  |
           |  |------ 显示图片
           |  |
           |  |------ GetBitsFromBitmapHandle
           |  |
           |  |------ 画图片_从字节集_GDIPlus
           |  |
           |  |------ __启动窗口_将被销毁
           |  |
           |  |------ 取验证码
           |  |
           |  |------ _图片框1_鼠标左键被放开
           |  |
           |  |------ _编辑框_内容_内容被改变
           |  |
           |  |------ _编辑框_内容_字符输入
           |  |
           |  |
======字节流
           |  |
           |  |------ _初始化
           |  |
           |  |------ _销毁
           |  |
           |  |------ 释放字节流
           |  |
           |  |------ 创建字节流
           |  |
           |  |
======调用的Dll
           |  |
           |  |---[dll]------   GetDC
           |  |
           |  |---[dll]------   CreateCompatibleDC
           |  |
           |  |---[dll]------   GdipCreateFromHDC
           |  |
           |  |---[dll]------   GdipLoadImageFromStream
           |  |
           |  |---[dll]------   GdipGetImageDimension
           |  |
           |  |---[dll]------   GdipDrawImageRect
           |  |
           |  |---[dll]------   GdipDisposeImage
           |  |
           |  |---[dll]------   GdipDeleteGraphics
           |  |
           |  |---[dll]------   GlobalAlloc
           |  |
           |  |---[dll]------   CreateStreamOnHGlobal
           |  |
           |  |---[dll]------   GlobalLock
           |  |
           |  |---[dll]------   GlobalUnlock
           |  |
           |  |---[dll]------   GlobalFree
           |  |
           |  |---[dll]------   GdiplusShutdown
           |  |
           |  |---[dll]------   GdiplusStartup
           |  |
           |  |---[dll]------   ReleaseDC
           |  |
           |  |---[dll]------   CreateCompatibleBitmap
           |  |
           |  |---[dll]------   SelectObject
           |  |
           |  |---[dll]------   GetObjectA
           |  |
           |  |---[dll]------   GetDIBits_BimapInfo
           |  |
           |  |---[dll]------   GetDIBits
           |  |
           |  |---[dll]------   CopyMemory_BITMAPINFO
           |  |
           |  |---[dll]------   CopyMemory_BITMAPFILEHEADER
           |  |
           |  |---[dll]------   DeleteDC
           |  |
           |  |---[dll]------   DeleteObject

调用的DLL命令:

.DLL命令 GetDC, 整数型, , "GetDC"
    .参数 hwnd, 整数型

.DLL命令 CreateCompatibleDC, 整数型, , "CreateCompatibleDC"
    .参数 hdc, 整数型

.DLL命令 GdipCreateFromHDC, 整数型, "GdiPlus.dll", "GdipCreateFromHDC"
    .参数 hdc, 整数型
    .参数 graphics, 整数型, 传址

.DLL命令 GdipLoadImageFromStream, 整数型, "GdiPlus.dll", "GdipLoadImageFromStream"
    .参数 stream, 整数型
    .参数 image, 整数型, 传址

.DLL命令 GdipGetImageDimension, 整数型, "GdiPlus.dll", "GdipGetImageDimension"
    .参数 image, 整数型
    .参数 width, 小数型, 传址
    .参数 height, 小数型, 传址

.DLL命令 GdipDrawImageRect, 整数型, "GdiPlus.dll", "GdipDrawImageRect"
    .参数 graphics, 整数型
    .参数 image, 整数型
    .参数 x, 小数型
    .参数 y, 小数型
    .参数 width, 小数型
    .参数 height, 小数型

.DLL命令 GdipDisposeImage, 整数型, "gdiplus.dll", "GdipDisposeImage"
    .参数 image, 整数型

.DLL命令 GdipDeleteGraphics, 整数型, "GdiPlus.dll", "GdipDeleteGraphics"
    .参数 graphics, 整数型

.DLL命令 GlobalAlloc, 整数型, , "GlobalAlloc"
    .参数 wFlags, 整数型
    .参数 dwBytes, 整数型

.DLL命令 CreateStreamOnHGlobal, 整数型, "Ole32.dll", "CreateStreamOnHGlobal"
    .参数 hGlobal, 整数型
    .参数 fDeleteOnRelease, 整数型
    .参数 ppstm, 整数型, 传址

.DLL命令 GlobalLock, 整数型, , "GlobalLock"
    .参数 hMem, 整数型

.DLL命令 GlobalUnlock, 整数型, , "GlobalUnlock"
    .参数 hMem, 整数型

.DLL命令 GlobalFree, 整数型, , "GlobalFree"
    .参数 hMem, 整数型

.DLL命令 GdiplusShutdown, , "gdiplus.dll", "GdiplusShutdown"
    .参数 token, 整数型

.DLL命令 GdiplusStartup, 整数型, "gdiplus.dll", "GdiplusStartup"
    .参数 token, 整数型, 传址
    .参数 inputbuf, GdiplusStartupInput
    .参数 outputbuf, 整数型

.DLL命令 ReleaseDC, , , "ReleaseDC"
    .参数 hwnd, 整数型, , 要释放的设备场景相关的窗口句柄
    .参数 hdc, 整数型, , 要释放的设备场景句柄

.DLL命令 CreateCompatibleBitmap, 整数型, , "CreateCompatibleBitmap"
    .参数 hdc, 整数型
    .参数 nWidth, 整数型
    .参数 nHeight, 整数型

.DLL命令 SelectObject, 整数型, , "SelectObject"
    .参数 hdc, 整数型, , 一个设备场景的句柄
    .参数 hObject, 整数型, , 一个画笔、位图、刷子、字体或区域的句柄

.DLL命令 GetObjectA, 整数型, , "GetObjectA"
    .参数 hgdiobj
    .参数 cbBuffer
    .参数 lpvObject, BITMAP

.DLL命令 GetDIBits_BimapInfo, 整数型, , "GetDIBits"
    .参数 HDC
    .参数 hBitmap
    .参数 nStartScan
    .参数 nNumScans
    .参数 lpBits
    .参数 lpBI, BITMAPINFO
    .参数 wUsage

.DLL命令 GetDIBits, 整数型, , "GetDIBits"
    .参数 HDC
    .参数 hBitmap
    .参数 nStartScan
    .参数 nNumScans
    .参数 lpBits, 字节集
    .参数 lpBI, BITMAPINFO
    .参数 wUsage

.DLL命令 CopyMemory_BITMAPINFO, 整数型, , "RtlMoveMemory"
    .参数 Destination, 字节集
    .参数 Source, BITMAPINFO
    .参数 Length

.DLL命令 CopyMemory_BITMAPFILEHEADER, 整数型, , "RtlMoveMemory"
    .参数 Destination, 字节集
    .参数 Source, BITMAPFILEHEADER
    .参数 Length

.DLL命令 DeleteDC, 整数型, , "DeleteDC"
    .参数 hdc

.DLL命令 DeleteObject, 整数型, , "DeleteObject"
    .参数 hdc