Windows CE、MFC 中 MoveTo 和 LineTo 的替代
您好，我正在开发一些高分辨率显示功能，其中必须绘制垂直线，我正在使用 Moveto() 和 lineTO() ，但需要花费很多时间... 谁能建议我，我们可以用什么来代替它...来优化性能...
看到的场景是，为了绘制 100 条垂直线，需要 84 毫秒的时间，我们需要将其减少到 5 毫秒左右。 。
请向我推荐任何替代方案
谢谢，
穆克什
Hi i am working on some high resolution display features in which have to draw the vertical line , i am using Moveto() and lineTO() , but it is much time taking...
can anyone suggest me , what we can use instead of it ...to optimize the performance...
see the scene is , in order to draw 100 Vertical lines it is taking 84ms time, we need to reduce it to 5 ms something..
please refer me any alternate fot that.
Thanks,
Mukesh
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第一步可能是尝试
CDC::PolyPolyline。这是迄今为止最容易进行的修改，而且可能就足够了。此后决定下一步可能会更加困难。最明显的可能性是 GDI+、OpenGL 和 DirectX 图形。我按照使用复杂性的递增顺序列出了这些内容，以及它们为您提供所需速度提升的可能性。The first step would probably be to try
CDC::PolyPolyline. It's by far the easiest modification to make, and might be sufficient. Deciding on the next step after that will probably be much more difficult. The obvious possibilities would be GDI+, OpenGL, and DirectX Graphics. I've listed those in approximately increasing order of complexity to use, and likelihood that they'll give you the speed increase you want.如果这些垂直线实际上形成了矩形，还有一个 矩形 函数可能对您有用。
There is also Rectangle function that may be useful to you if those vertical lines actually make rectangles.
我认为 100 条线不应该花那么长时间来绘制。还有什么你没有告诉我们的吗？您是否直接在屏幕 DC 上绘图？您是否尝试过绘制到屏幕外位图，然后 blt-ing 到屏幕？
I don't think that 100 lines should take that long to draw. Is there something else that you aren't telling us. Are you drawing direct to a screen DC? Have you tried drawing to offscreen bitmap and then blt-ing to the screen?
我建议你使用 GDI+，它应该更快，好吧，你需要尝试一下它是否真的适合你的需要:-)
这里有一个将 GDI+ 与 MFC 集成的链接： 将 GDI+ 与 MFC 或本机 C/C++ 结合使用
I suggest you use GDI+ which should be faster, well, you need to try if it really fits your need :-)
Here is a link to integrate GDI+ with MFC: Using GDI+ with MFC or native C/C++