Gdiplus ::位图以字节数组？ [英] Gdiplus::Bitmap to BYTE array?

问题描述

下面是我尝试（丑陋的GDI + 和 GDI组合...）

Here's my attempt (ugly GDI+ and GDI mix...)

// ...
BYTE               pixels[BMP_WIDTH * BMP_HEIGHT * BMP_BPP];
HBITMAP            hBitmap;
Gdiplus::Bitmap    cBitmap(BMP_WIDTH, BMP_HEIGHT, PixelFormat32bppRGB);
Gdiplus::Graphics  cGraphics(&cBitmap);
Gdiplus::Pen       cPen(Gdiplus::Color(255, 255, 0, 0));

cGraphics.DrawRectangle(&cPen, 0, 0, cBitmap.GetWidth() - 1, cBitmap.GetHeight() - 1);

// and here it get's real ugly, I'd like to change that...
cBitmap.GetHBITMAP(Gdiplus::Color(255, 255, 255), &hBitmap);
GetBitmapBits(hBitmap, sizeof(pixels), pixels);
// ...

有人告诉我使用LockBits但我真的不知道如何。我试了一下，但我失败了，所以我不打算张贴的尝试了。

Someone told me to use LockBits but I really didn't understand how. I tried it, but I failed so I'm not going to post that attempt, too.

推荐答案

您可以使用位图:: LockBits 来获取访问数据的原始数组。 这里你可以了解如何使用位图:: LockBits 。

You could use Bitmap::LockBits to get access to a raw array of data. Here you could read about how to use Bitmap::LockBits.

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