Domů » Martin Owens » Resources » PasteBin » winreg watcher
  1. -- API Brief (how it would be used) --
  3. _watch_all = RegistryWatcher(HKEY_LOCAL_MACHINE, "Software/Microsoft/Windows-NT/CurrentVersion/Fonts", [=]() {
  4. ... My font refresh code ...
  5. });
  6. _watch_user = RegistryWatcher(HKEY_CURRENT_USER, "Software/Microsoft/Windows-NT/CurrentVersion/Fonts", [=]() {
  7. ... My font refresh code ...
  8. });
  10. -- CPP FILE BEGINS --
  12. // SPDX-License-Identifier: GPL-2.0-or-later
  13. /*
  14. * Monitor the windows registry for changes and other windows registry utilities.
  15. *
  16. * Authors:
  17. * Martin Owens <doctormo@geek-2.com>
  18. *
  19. * The contents of this file may be used under the GNU General Public License Version 2 or later.
  20. *
  21. */
  23. #ifdef _WIN32
  25. #include <util/win32-registry.h>
  27. namespace Inkscape {
  28. namespace Util {
  30. RegistryWatcher::RegistryWatcher(HKEY rootkey, std::string subkey, std::function<bool ()> &callback)
  31. : _callback(callback)
  32. {
  34. // Get the HKEY from the string
  35. char *key = g_locale_from_utf8(subkey.c_str(), -1, NULL, NULL, NULL);
  36. if (RegOpenKeyExA(rootkey, key, 0, KEY_NOTIFY, &_regkey) != ERROR_SUCCESS) {
  37. char *errmsg = g_win32_error_message(GetLastError());
  38. g_warning("Unable to open registery key: %s", errmsg);
  39. g_free(errmsg);
  40. return;
  41. }
  42. g_free(key);
  44. // Create an event object
  45. if (!(_change_event = CreateEvent(NULL, TRUE, FALSE, NULL))) {
  46. char *errmsg = g_win32_error_message(GetLastError());
  47. g_warning("Unable to create registery event: %s", errmsg);
  48. g_free(errmsg);
  49. return;
  50. }
  52. // Create a notification
  53. DWORD filter = REG_NOTIFY_CHANGE_NAME | REG_NOTIFY_CHANGE_LAST_SET;
  54. if (RegNotifyChangeKeyValue(_regkey, TRUE, filter, _change_event, TRUE) != ERROR_SUCCESS) {
  55. g_warning("Unable to watch windows registery");
  56. CloseHandle(_change_event);
  57. _change_event = nullptr;
  58. }
  60. // Watch for changes
  61. _poll = Glib::signal_timeout().connect_seconds(sigc::mem_fun(*this, &RegistryWatcher::on_poll), 3000);
  62. }
  64. RegistryWatcher::~RegistryWatcher()
  65. {
  66. _poll.disconnect();
  68. if (_change_event) {
  69. CloseHandle(_change_event);
  70. _change_event = nullptr;
  71. }
  72. }
  74. bool RegisteryWatch::on_poll()
  75. {
  76. if (_change_event) {
  77. // XXX Check _change_event here somehow without blocking
  78. }
  79. }
  81. } // namespace Util
  82. } // namespace Inkscape
  84. #endif // WIN32
  86. /*
  87. Local Variables:
  88. mode:c++
  89. c-file-style:"stroustrup"
  90. c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  91. indent-tabs-mode:nil
  92. fill-column:99
  93. End:
  94. */
  97. -- HEADER BEGINS --
  100. // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
  101. // SPDX-License-Identifier: GPL-2.0-or-later
  102. /*
  103. * Monitor the windows registery for changes and other windows registry utilities.
  104. *
  105. * Authors:
  106. * Martin Owens <doctormo@geek-2.com>
  107. *
  108. * The contents of this file may be used under the GNU General Public License Version 2 or later.
  109. *
  110. */
  112. #ifdef _WIN32
  113. #ifndef UTILS_WINREG_H
  114. #define UTILS_WINREG_H
  116. #include <string>
  117. #include <functional>
  118. #include <glib.h>
  120. #include "win32dep.h"
  122. namespace Inkscape {
  123. namespace Util {
  125. class RegistryWatcher
  126. {
  127. public:
  128. RegistryWatcher(HKEY rootkey, std::string hkey, std::function<bool ()> &callback);
  129. ~RegistryWatcher();
  130. private:
  131. std::function<bool ()> _callback;
  132. HKEY _regkey = NULL;
  134. // These could be made static in the future to improve performance
  135. sigc::connection _poll;
  136. HANDLE _change_event = NULL;
  137. };
  139. } // namespace Util
  140. } // namespace Inkscape
  142. #endif // UTILS_WINREG_H
  143. #endif // WIN32
  145. /*
  146. Local Variables:
  147. mode:c++
  148. c-file-style:"stroustrup"
  149. c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  150. indent-tabs-mode:nil
  151. fill-column:99
  152. End:
  153. */
  154. // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
 
 

248

winreg watcher

od Martin Owens

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PasteBin

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Created
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Lesser General Public License v2 (LGPLv2)
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