我正在尝试捕获屏幕图像以用于截屏.因此我需要一个快速的解决方案,并且不能依赖shell程序,如import或xwd.
这是我到目前为止编写的代码,但是它失败并且给了我一个垃圾图像,它似乎只是显示了奇怪颜色的几个图像的片段.
http://s9.postimage.org/dqnkgkwr1/blah.png
关于我做错了什么的任何想法?
#include <X11/Xlib.h>
#include <X11/X.h>
#include <cstdio>
#include <CImg.h>
using namespace cimg_library;
int main()
{
Display *display = XOpenDisplay(NULL);
Window root = DefaultRootWindow(display);
XWindowAttributes gwa;
XGetWindowAttributes(display, root, &gwa);
int width = gwa.width;
int height = gwa.height;
XImage *image = XGetImage(display,root, 0,0 , width,height,AllPlanes, ZPixmap);
unsigned char *array = new unsigned char[width * height * 3];
unsigned long red_mask = image->red_mask;
unsigned long green_mask = image->green_mask;
unsigned long blue_mask = image->blue_mask;
for (int x = 0; x < …Run Code Online (Sandbox Code Playgroud)