Convert ImageResizer to a PowerToy

src/modules/imageresizer/ShellExtensions/ContextMenuHandler.cpp

@@ -3,6 +3,7 @@
 #include "stdafx.h"
 #include "ContextMenuHandler.h"
 #include "HDropIterator.h"
+#include "Settings.h"
 
 CContextMenuHandler::CContextMenuHandler()
 {
@@ -51,7 +52,10 @@ HRESULT CContextMenuHandler::QueryContextMenu(_In_ HMENU hmenu, UINT indexMenu,
     {
         return S_OK;
     }
-
+    if (!CSettings::GetEnabled())
+    {
+        return E_FAIL;
+    }
     // NB: We just check the first item. We could iterate through more if the first one doesn't meet the criteria
     HDropIterator i(m_pdtobj);
     i.First();

src/modules/imageresizer/ShellExtensions/Settings.cpp

@@ -0,0 +1,66 @@
+#include "stdafx.h"
+#include <commctrl.h>
+#include "Settings.h"
+
+const wchar_t c_rootRegPath[] = L"Software\\Microsoft\\ImageResizer";
+const wchar_t c_enabled[] = L"Enabled";
+const bool c_enabledDefault = true;
+
+bool CSettings::GetEnabled()
+{
+    return GetRegBoolValue(c_enabled, c_enabledDefault);
+}
+
+bool CSettings::SetEnabled(_In_ bool enabled)
+{
+    return SetRegBoolValue(c_enabled, enabled);
+}
+
+bool CSettings::SetRegBoolValue(_In_ PCWSTR valueName, _In_ bool value)
+{
+    DWORD dwValue = value ? 1 : 0;
+    return SetRegDWORDValue(valueName, dwValue);
+}
+
+bool CSettings::GetRegBoolValue(_In_ PCWSTR valueName, _In_ bool defaultValue)
+{
+    DWORD value = GetRegDWORDValue(valueName, (defaultValue == 0) ? false : true);
+    return (value == 0) ? false : true;
+}
+
+bool CSettings::SetRegDWORDValue(_In_ PCWSTR valueName, _In_ DWORD value)
+{
+    return (SUCCEEDED(HRESULT_FROM_WIN32(SHSetValue(HKEY_CURRENT_USER, c_rootRegPath, valueName, REG_DWORD, &value, sizeof(value)))));
+}
+
+DWORD CSettings::GetRegDWORDValue(_In_ PCWSTR valueName, _In_ DWORD defaultValue)
+{
+    DWORD retVal = defaultValue;
+    DWORD type = REG_DWORD;
+    DWORD dwEnabled = 0;
+    DWORD cb = sizeof(dwEnabled);
+    if (SHGetValue(HKEY_CURRENT_USER, c_rootRegPath, valueName, &type, &dwEnabled, &cb) == ERROR_SUCCESS)
+    {
+        retVal = dwEnabled;
+    }
+
+    return retVal;
+}
+
+bool CSettings::SetRegStringValue(_In_ PCWSTR valueName, _In_ PCWSTR value)
+{
+    ULONG cb = (DWORD)((wcslen(value) + 1) * sizeof(*value));
+    return (SUCCEEDED(HRESULT_FROM_WIN32(SHSetValue(HKEY_CURRENT_USER, c_rootRegPath, valueName, REG_SZ, (const BYTE*)value, cb))));
+}
+
+bool CSettings::GetRegStringValue(_In_ PCWSTR valueName, __out_ecount(cchBuf) PWSTR value, DWORD cchBuf)
+{
+    if (cchBuf > 0)
+    {
+        value[0] = L'\0';
+    }
+
+    DWORD type = REG_SZ;
+    ULONG cb = cchBuf * sizeof(*value);
+    return (SUCCEEDED(HRESULT_FROM_WIN32(SHGetValue(HKEY_CURRENT_USER, c_rootRegPath, valueName, &type, value, &cb) == ERROR_SUCCESS)));
+}

src/modules/imageresizer/ShellExtensions/Settings.h

@@ -0,0 +1,16 @@
+#pragma once
+
+class CSettings
+{
+public:
+    static bool GetEnabled();
+    static bool SetEnabled(_In_ bool enabled);
+
+private:
+    static bool GetRegBoolValue(_In_ PCWSTR valueName, _In_ bool defaultValue);
+    static bool SetRegBoolValue(_In_ PCWSTR valueName, _In_ bool value);
+    static bool SetRegDWORDValue(_In_ PCWSTR valueName, _In_ DWORD value);
+    static DWORD GetRegDWORDValue(_In_ PCWSTR valueName, _In_ DWORD defaultValue);
+    static bool SetRegStringValue(_In_ PCWSTR valueName, _In_ PCWSTR value);
+    static bool GetRegStringValue(_In_ PCWSTR valueName, __out_ecount(cchBuf) PWSTR value, DWORD cchBuf);
+};