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9c58574484
This uses IVirtualDesktopManagerInternal*, which is an undocumented Windows Shell internal API. These interfaces are not stable and can change across Windows updates, so using them in PowerToys carries some long-term risk
107 lines
3.5 KiB
C++
107 lines
3.5 KiB
C++
#include "pch.h"
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#include <windows.h>
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#include "ThemeHelper.h"
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// Controls changing the themes.
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static void ResetColorPrevalence()
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{
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HKEY hKey;
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if (RegOpenKeyEx(HKEY_CURRENT_USER,
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L"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize",
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0,
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KEY_SET_VALUE,
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&hKey) == ERROR_SUCCESS)
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{
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DWORD value = 0; // back to default value
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RegSetValueEx(hKey, L"ColorPrevalence", 0, REG_DWORD, reinterpret_cast<const BYTE*>(&value), sizeof(value));
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RegCloseKey(hKey);
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SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, 0, reinterpret_cast<LPARAM>(L"ImmersiveColorSet"), SMTO_ABORTIFHUNG, 5000, nullptr);
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SendMessageTimeout(HWND_BROADCAST, WM_THEMECHANGED, 0, 0, SMTO_ABORTIFHUNG, 5000, nullptr);
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SendMessageTimeout(HWND_BROADCAST, WM_DWMCOLORIZATIONCOLORCHANGED, 0, 0, SMTO_ABORTIFHUNG, 5000, nullptr);
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}
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}
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void SetAppsTheme(bool mode)
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{
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HKEY hKey;
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if (RegOpenKeyEx(HKEY_CURRENT_USER,
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L"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize",
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0,
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KEY_SET_VALUE,
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&hKey) == ERROR_SUCCESS)
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{
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DWORD value = mode;
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RegSetValueEx(hKey, L"AppsUseLightTheme", 0, REG_DWORD, reinterpret_cast<const BYTE*>(&value), sizeof(value));
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RegCloseKey(hKey);
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SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, 0, reinterpret_cast<LPARAM>(L"ImmersiveColorSet"), SMTO_ABORTIFHUNG, 5000, nullptr);
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SendMessageTimeout(HWND_BROADCAST, WM_THEMECHANGED, 0, 0, SMTO_ABORTIFHUNG, 5000, nullptr);
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}
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}
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void SetSystemTheme(bool mode)
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{
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HKEY hKey;
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if (RegOpenKeyEx(HKEY_CURRENT_USER,
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L"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize",
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0,
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KEY_SET_VALUE,
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&hKey) == ERROR_SUCCESS)
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{
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DWORD value = mode;
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RegSetValueEx(hKey, L"SystemUsesLightTheme", 0, REG_DWORD, reinterpret_cast<const BYTE*>(&value), sizeof(value));
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RegCloseKey(hKey);
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if (mode) // if are changing to light mode
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{
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ResetColorPrevalence();
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}
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SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, 0, reinterpret_cast<LPARAM>(L"ImmersiveColorSet"), SMTO_ABORTIFHUNG, 5000, nullptr);
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SendMessageTimeout(HWND_BROADCAST, WM_THEMECHANGED, 0, 0, SMTO_ABORTIFHUNG, 5000, nullptr);
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}
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}
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bool GetCurrentSystemTheme()
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{
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HKEY hKey;
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DWORD value = 1; // default = light
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DWORD size = sizeof(value);
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if (RegOpenKeyEx(HKEY_CURRENT_USER,
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L"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize",
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0,
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KEY_READ,
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&hKey) == ERROR_SUCCESS)
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{
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RegQueryValueEx(hKey, L"SystemUsesLightTheme", nullptr, nullptr, reinterpret_cast<LPBYTE>(&value), &size);
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RegCloseKey(hKey);
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}
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return value == 1; // true = light, false = dark
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}
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bool GetCurrentAppsTheme()
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{
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HKEY hKey;
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DWORD value = 1;
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DWORD size = sizeof(value);
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if (RegOpenKeyEx(HKEY_CURRENT_USER,
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L"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize",
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0,
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KEY_READ,
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&hKey) == ERROR_SUCCESS)
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{
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RegQueryValueEx(hKey, L"AppsUseLightTheme", nullptr, nullptr, reinterpret_cast<LPBYTE>(&value), &size);
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RegCloseKey(hKey);
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}
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return value == 1; // true = light, false = dark
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}
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