如何在C＃中将IntPtr转换为Image [英] how to convert IntPtr to Image in C#

问题描述

Hello Everyone。

i希望将

Hello Everyone.
i want to convert

IntPtr

转换为

Image

。



i试试这个。但没有给我一张扫描图片。

.

i have try this. but not given me a scan image.

IntPtr img = (IntPtr) pics[ i ];
Bitmap _img = new Bitmap(2450, 2450, 2452, PixelFormat.Format32bppRgb, img)
pictureBox1.Image = _img;

推荐答案

在这里谈论转换是不正确的;更重要的是，我们不知道什么是 pics 。最有可能的是，输入 IntPtr 是不切实际的荒谬;此类型用于将指针传递给非托管内存或对象句柄。



但实质上，我可以想象你有一些数据结构描述颜色（或颜色+ alpha）对于每个像素，您需要将此数据放在位图中。然后答案非常明显： https：/ /msdn.microsoft.com/en-us/library/system.drawing.bitmap.lockbits%28v=vs.110%29.aspx [ ^ ]。



您可以在MSDN帮助页面上找到有关这些类似方法之一的完整代码示例。

-SA

Talking about "conversion" here is incorrect; and, more importantly, we don't know what is pics. Most likely, type casting to IntPtr would be impractical absurd; this type is used for passing pointers to unmanaged memory or object handles.

But in essence, I can imagine that you have some data structures describing the color (or color+alpha) for each pixel, and you need to put this data in a bitmap. Then the answer is pretty obvious: https://msdn.microsoft.com/en-us/library/system.drawing.bitmap.lockbits%28v=vs.110%29.aspx[^].

You will find a complete code sample on the MSDN help page on one of these similar methods.

—SA

System.Drawing.Image.FromHbitmap（IntPtr输入）

System.Drawing.Image.FromHbitmap(IntPtr input)

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