<html> <head> <style></style> </head> <body class='hmmessage'> Here is what I put together with the help of everyone =) I've also added in it as a test code with Xlib to compare speeds and etc... Posted the code at: http://pastebin.com/f34fa2d3f aswell for better view. [CODE] /**  * Author: Nadeem Syed  * Desc: Gets a color from the specified point(x, y) from the window id provided  *  * @see http://lists.freedesktop.org/archives/xcb/2009-November/005343.html  */ // Standard #include <iostream> #include <sys/time.h> // Xlib's #include <X11/Xlib.h> // XCB's #include <xcb/xcb.h> #include <xcb/xproto.h> #include <xcb/xcb_image.h> #define WINDOW_ID_TO_USE 65011716 typedef struct BOUNDS {     uint16_t x;     uint16_t y;     uint16_t width;     uint16_t height; } BOUNDS; void GetColor(unsigned int color, bool useXCB); XImage* Xlib_GetImage(Window screen, BOUNDS &bounds); unsigned int Xlib_GetColor(int x, int y, XImage *img); int Xlib_CountColors(void); xcb_image_t* XCB_GetImage(xcb_window_t window, BOUNDS &bounds, uint8_t* &data); unsigned int XCB_GetColor(int x, int y, xcb_image_t *img, uint8_t *data); int XCB_CountColors(void); /*     return interval of time (uses time.h) */ double get_time (void) {     struct timeval timev;               gettimeofday(&timev, NULL);     return (double)timev.tv_sec + (((double)timev.tv_usec) / 1000000); } int main() {     double start, xcbt, xlibt;         start = get_time();     GetColor(0, true);     xcbt = get_time() - start;     start = get_time();     GetColor(0, false);     xlibt = get_time() - start;     std::cout << "XCB GetColor Time = " << xcbt << std::endl;     std::cout << "Xlib GetColor Time = " << xlibt << std::endl;         std::cout << "--- Counting Colors ---" << std::endl;     start = get_time();     int xcb_count = 0;     for (int i = 0; i <= 19; i++)         xcb_count = XCB_CountColors();     xcbt = (get_time() - start) / 19;     std::cout << "XCB Colors Counted = " << xcb_count << std::endl;     std::cout << "XCB Time Took AVG  = " << xcbt << std::endl;     start = get_time();     int xlib_count;     for (int i = 0; i <= 19; i++)         xlib_count = Xlib_CountColors();     xlibt = (get_time() - start) / 19;     std::cout << "Xlib Colors Counted = " << xlib_count << std::endl;     std::cout << "Xlib Time Took AVG  = " << xlibt << std::endl;         return 0; } /**  * Gets color using the specified library. (true = XCB, false = Xlib)  */ void GetColor(unsigned int color, bool useXCB) {     if (!useXCB) {         BOUNDS bounds;         XImage *img = Xlib_GetImage(WINDOW_ID_TO_USE, bounds);         unsigned int c = Xlib_GetColor(39, 39, img);         std::cout << "Xlib Get Color = " << c << std::endl;     } else {         uint8_t *data;         BOUNDS bounds;         xcb_image_t *img = XCB_GetImage(WINDOW_ID_TO_USE, bounds, data);         unsigned int c = XCB_GetColor(39, 39, img, data);         std::cout << "XCB Get Color = " << c << std::endl;     } } /**  * Xlib - Get Image  */ XImage* Xlib_GetImage(Window screen, BOUNDS &bounds) {     XImage* bitmap;     Display *display = XOpenDisplay(NULL);     XWindowAttributes attr;     XGetWindowAttributes(display, screen, &attr);     bounds.x = attr.x;     bounds.y = attr.y;     bounds.width = attr.width - bounds.x;     bounds.height = attr.height - bounds.y;     bitmap = XGetImage(display, screen, bounds.x, bounds.y,                        bounds.width, bounds.height, AllPlanes, ZPixmap);     return bitmap; } /**  * Xlib - Get Color  */ unsigned int Xlib_GetColor(int x, int y, XImage *img) {     unsigned char* data = (unsigned char*)img->data;     int bpp = img->bits_per_pixel / 8;     int loc = (y * bpp * img->width) + (bpp * x);     return (data[loc] << 16) | (data[loc+1] << 8) | (data[loc+2]); } /**  * Xlib - Count Colors  */ int Xlib_CountColors(void) {     BOUNDS bounds;     XImage *img = Xlib_GetImage(WINDOW_ID_TO_USE, bounds);     int color_count = 0;//bounds.width * bounds.height - 2;     for (int w = 0; w < bounds.width; w++) {         for (int h = 0; h < bounds.height; h++) {             //std::cout <<             Xlib_GetColor(w, h, img);             color_count++;         }     }     return color_count; } /**  * XCB - Get image  */ xcb_image_t* XCB_GetImage(xcb_window_t window, BOUNDS &bounds, uint8_t* &data) {     xcb_connection_t *c = xcb_connect(NULL, NULL);     xcb_image_format_t format = XCB_IMAGE_FORMAT_Z_PIXMAP;        xcb_get_geometry_cookie_t gcookie = xcb_get_geometry(c, window);     xcb_get_geometry_reply_t *greply = xcb_get_geometry_reply(c, gcookie, NULL);     bounds.x = greply->x;     bounds.y = greply->y;     bounds.width = greply->width - bounds.x;     bounds.height = greply->height - bounds.y;     xcb_get_image_cookie_t cookie = xcb_get_image(c, format, window,                                                   bounds.x, bounds.y,                                                   bounds.width, bounds.height,                                                   ~0);     xcb_get_image_reply_t *reply = xcb_get_image_reply(c, cookie, NULL);     data = xcb_get_image_data(reply);     return xcb_image_create_native(c, greply->width, greply->height, format,                                    reply->depth, NULL, ~0, data); } /**  * XCB - Get Color  */ unsigned int XCB_GetColor(int x, int y, xcb_image_t *img, uint8_t *data) {     int bpp = img->bpp / 8;     int loc = (y * bpp * img->width) + (bpp * x);     return (data[loc] << 16) | (data[loc+1] << 8) | data[loc+2]; } /**  * XCB - Count Colors  */ int XCB_CountColors(void) {     uint8_t *data;     BOUNDS bounds;     xcb_image_t *img = XCB_GetImage(WINDOW_ID_TO_USE, bounds, data);     int color_count = 0;//bounds.width * bounds.height - 2;     for (int w = 0; w < bounds.width; w++) {         for (int h = 0; h < bounds.height; h++) {             //std::cout <<             XCB_GetColor(w, h, img, data);             color_count++;         }     }     return color_count; } [/CODE] -- Some of my results XCB Get Color = 2829099 Xlib Get Color = 2829099 XCB GetColor Time = 0.0155019 Xlib GetColor Time = 0.0166171 --- Counting Colors --- XCB Colors Counted = 160321 XCB Time Took AVG  = 0.0175713 Xlib Colors Counted = 160321 Xlib Time Took AVG  = 0.0190249 XCB Get Color = 2829099 Xlib Get Color = 2829099 XCB GetColor Time = 0.0114239 Xlib GetColor Time = 0.0141051 --- Counting Colors --- XCB Colors Counted = 160321 XCB Time Took AVG  = 0.0172025 Xlib Colors Counted = 160321 Xlib Time Took AVG  = 0.020595 XCB Get Color = 2829099 Xlib Get Color = 2829099 XCB GetColor Time = 0.0126981 Xlib GetColor Time = 0.013911 --- Counting Colors --- XCB Colors Counted = 160321 XCB Time Took AVG  = 0.0174001 Xlib Colors Counted = 160321 Xlib Time Took AVG  = 0.0196311 ~ Thanks <hr />Get a great deal on Windows 7 and see how it works the way you want. <a href='http://go.microsoft.com/?linkid=9691813' target='_new'>See the Windows 7 offers now.</a></body> </html>