Keeping up-to-date, and preparing for some basic CLI stuff with

a simple CXXOpts handler that had an API I thought was somewhat
readable.

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "vendor/cxxopts"]
+	path = vendor/cxxopts
+	url = https://github.com/jarro2783/cxxopts

notes.md

@@ -6,3 +6,6 @@
   'get_screen_resources'.
 - The screen_resources object is contains 'screen_resources_crtcs',
   which you again get via an iterator. These are cookies.
+
+CXX Opts looks like a really useful version of GetOpts that will do what you want:
+https://github.com/jarro2783/cxxopts

src/xrandr.cpp

@@ -4,6 +4,7 @@
 #include <iostream>
 #include <memory>
 #include <vector>
+#include <xcb>
 
 xcb_randr_get_screen_resources_reply_t* get_screen_resources(xcb_connection_t* connection,
                                                              xcb_window_t rootWindow) {
@@ -42,24 +43,6 @@ void display_one_crtc(xcb_randr_get_crtc_info_reply_t* crtc) {
               << " rotation: " << rotation_map(crtc->rotation) << std::endl;
 }
 
-void display_crtc_info(xcb_connection_t* connection, std::vector<xcb_randr_crtc_t>& crtc_cs) {
-    std::vector<xcb_randr_get_crtc_info_cookie_t> cookies;
-    xcb_generic_error_t* error = nullptr;
-    for (const auto& crtc : crtc_cs) {
-        cookies.push_back(xcb_randr_get_crtc_info(connection, crtc, XCB_CURRENT_TIME));
-    }
-    for (const auto& cookie : cookies) {
-        xcb_randr_get_crtc_info_reply_t* reply =
-            xcb_randr_get_crtc_info_reply(connection, cookie, &error);
-        if (error) {
-            free(error);
-        } else {
-            display_one_crtc(reply);
-            free(reply);
-        }
-    }
-}
-
 void display_one_output(xcb_connection_t* connection, xcb_randr_get_output_info_reply_t* output,
                         xcb_timestamp_t timestamp) {
     xcb_randr_get_crtc_info_reply_t* crtc = xcb_randr_get_crtc_info_reply(
@@ -107,7 +90,12 @@ void display_outputs(xcb_connection_t* connection,
 //                 xcb_randr_get_crtc_info_reply_t* reply =
 //                     xcb_randr_get_crtc_info_reply(connection, cookie, &error);
 //                 xcb_randr_rotation_t rotation =
-//                 (xcb_randr_rotation_t)reply->rotation; free(reply); return rotation;
+//  bool MyClass::operator!=(const MyClass &other) const {
+return !(*this == other);
+}
+(xcb_randr_rotation_t) reply->rotation;
+free(reply);
+return rotation;
 //             }
 //
 

vendor/cxxopts

@@ -0,0 +1 @@
+Subproject commit 8185e6bb3a5d64717a5456903c71efc005ceb711