update documentation

README.md

@@ -1,12 +1,10 @@
 
-# Usage
+# Usage Instructions
-
-## Instructions
  * Plug HDMI into Beamer
  * Plug USB into Computer
  * booting the Raspberry takes approximately ?? seconds. the ?? led will light up when ready
  * start freeze.exe from the (now attached) USB-Drive
- * press WindowsKey+Y to take a screenshot
+ * press WindowsKey+Y or PRINTSCREEN to take a screenshot
  * simply unplug after use
 
 # Initial setup
@@ -18,7 +16,8 @@
  * Raspberry Pi Zero or Zero W or Model A (Model B/2B/3 not supported!)
 
 ## Hardware
-     ______________________
+                     D D (Status LEDs)
+     _______________||||___
     | :::::::::::::::::::: |
     |                      |
     |_HDMI________USB__PWR_|
@@ -73,5 +72,6 @@ mount -o remount,rw /boot
 
 ## ToDo
  * bootsplash
- * dritte led für boot?
+ * dritte led für boot?: dtoverlay=gpio-poweroff,gpiopin=23,active_low
+ * gpio pins ändern
  * screenshot-tool option für sofortigen screenshot

windows-snapshot-tool/src/main.cpp

@@ -194,14 +194,16 @@ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM
         }
     }
     break;
-
+/*   // registering the hotkey with NULL instead of Hwnd causes a WM_HOTKEY
+     // to be send to the thread instead of the window. this is the way to go!
+     // but that won't propagate to here. so this is handled in the message loop.
     case WM_HOTKEY_FREEZE:
     case WM_HOTKEY:
     {
         doScreenshot();
     }
     break;
-
+*/
     // intercept the hittest message..
     case WM_NCHITTEST:
     {