getdib获取图像

最新推荐文章于 2024-05-13 05:22:50 发布

samzym

最新推荐文章于 2024-05-13 05:22:50 发布

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本文链接：https://blog.youkuaiyun.com/samzym/article/details/3344358

这段代码展示了如何使用GDI+函数从图片框中获取DIB位图，进行处理后再输出到另一个图片框。通过GetDIBits和SetDIBitsToDevice函数实现图像的读取和绘制，并提供了CopyData子程序来复制处理像素数据。

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Private Declare Function DeleteDC Lib "gdi32" (ByVal hDC As Long) As Long
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
'获得指定类型的当前选定对象
Private Declare Function GetCurrentObject Lib "gdi32" (ByVal hDC As Long, ByVal uObjectType As Long) As Long
'获取DIB
Private Declare Function GetDIBits Lib "gdi32" (ByVal aHDC As Long, ByVal hBitmap As Long, ByVal nStartScan As Long, ByVal nNumScans As Long, lpBits As Any, lpBI As BitMapInfo, ByVal wUsage As Long) As Long
'获取系统时间
Private Declare Function timeGetTime Lib "winmm.dll" () As Long
Public Declare Function SetDIBitsToDevice Lib "gdi32" (ByVal hDC As Long, ByVal x As Long, ByVal y As Long, ByVal dx As Long, ByVal dy As Long, ByVal SrcX As Long, ByVal SrcY As Long, ByVal Scan As Long, ByVal NumScans As Long, Bits As Any, BitsInfo As BitMapInfo, ByVal wUsage As Long) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (pDest As Any,