added Config_monitorDisplayChangeMessages (issue #72)

doc/CHANGES.md

@@ -26,6 +26,7 @@ called with the window ID as a paramater, when applying the rule.
 11. `+` Added the possibility to minimize windows, making them floating and thereby excluded from tiling.
 12. `+` Added configuration variables for customizing the date and time format shown in the status bar.
 13. `+` Added a function to override the rules applied from `Config.ini` for the active window.
+14. `+` Added a configuration variable for customizing the behaviour on display change messages.
 
 |   # | `-` or `~` Configuration Variables or <br/> `-` Hotkey Functions | `+` Configuration Variables or <br/> `+` Hotkey Functions |
 | ---:| ---------------------------------------------------------------- | --------------------------------------------------------- |
@@ -88,6 +89,7 @@ called with the window ID as a paramater, when applying the rule.
 | 11. |                                                                  | `#^m::Manager_minimizeWindow()`                           |
 | 12. |                                                                  | `Config_readinDateFormat`                                 |
 |     |                                                                  | `Config_readinTimeFormat`                                 |
+| 14. |                                                                  | `Config_monitorDisplayChangeMessages`                     |
 
 ### 8.4.0
 

doc/Default_configuration.md

@@ -364,3 +364,8 @@ the data directory of bug.n. Possible values are `off`, `auto` and `ask`.
 > The interval in milliseconds, in which the session will be automatically
 saved to especially support the recovery of window states after bug.n
 unintentionally quits.
+
+`Config_monitorDisplayChangeMessages=1`
+> If true (`=1`) bug.n reacts on `WM_DISPLAYCHANGE` system messages asking to 
+reset the monitor configuration, e. g. if a monitor is dis-/connected or the 
+monitor resolution is changed.

src/Config.ahk

@@ -103,6 +103,7 @@ Config_init() {
   ;; Configuration management
   Config_autoSaveSession := "auto"    ;; "off" | "auto" | "ask"
   Config_maintenanceInterval := 5000
+  Config_monitorDisplayChangeMessages := True
 
   Config_hotkeyCount := 0
   Config_restoreConfig(Config_filePath)

src/Manager.ahk

@@ -653,6 +653,8 @@ Manager_override(rule = "") {
 }
 
 Manager_registerShellHook() {
+  Global Config_monitorDisplayChangeMessages
+  
   WM_DISPLAYCHANGE := 126   ;; This message is sent when the display resolution has changed.
   Gui, +LastFound
   hWnd := WinExist()
@@ -662,7 +664,8 @@ Manager_registerShellHook() {
   Debug_logMessage("DEBUG[1] Manager_registerShellHook; hWnd: " . hWnd . ", wndClass: " . wndClass . ", wndTitle: " . wndTitle, 1)
   msgNum := DllCall("RegisterWindowMessage", "Str", "SHELLHOOK")
   OnMessage(msgNum, "Manager_onShellMessage")
-  OnMessage(WM_DISPLAYCHANGE, "Manager_onDisplayChange")
+  If Config_monitorDisplayChangeMessages
+    OnMessage(WM_DISPLAYCHANGE, "Manager_onDisplayChange")
 }
 ;; SKAN: How to Hook on to Shell to receive its messages? (http://www.autohotkey.com/forum/viewtopic.php?p=123323#123323)