如何填充用纯色的位图？ [英] How do I fill a bitmap with a solid color?

问题描述

我需要创建采用了独特的RGB颜色24位位图（分辨率100×100像素），生成的图像保存到磁盘。我目前使用 的setPixel 功能，但它是非常缓慢的。

I need to create a 24-bit bitmap (resolution 100x100 pixels) using a unique RGB color and save the generated image to the disk. I currently use the SetPixel function, but it is extremely slow.

Bitmap Bmp = new Bitmap(width, height);
//...
//...
Bmp.SetPixel(x,y,Color.FromARGB(redvalue, greenvalue, bluevalue));

难道还有比的setPixel 更快的方法？先谢谢了。

Is there a faster method than SetPixel? Thanks in advance.

推荐答案

这应该做你需要什么。它会填满整个位图用指定的颜色。

This should do what you need it to. It will fill the entire bitmap with the specified color.

Bitmap Bmp = new Bitmap(width, height);
using (Graphics gfx = Graphics.FromImage(Bmp))
using (SolidBrush brush = new SolidBrush(Color.FromArgb(redvalue, greenvalue, bluevalue)))
{
    gfx.FillRectangle(brush, 0, 0, width, height);
}

这篇关于如何填充用纯色的位图？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！