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System.cpp
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/* Copyright (C) 2010 Rainmeter Project Developers
*
* This Source Code Form is subject to the terms of the GNU General Public
* License; either version 2 of the License, or (at your option) any later
* version. If a copy of the GPL was not distributed with this file, You can
* obtain one at <https://www.gnu.org/licenses/gpl-2.0.html>. */
#include "StdAfx.h"
#include "System.h"
#include "Util.h"
#include "Rainmeter.h"
#include "Skin.h"
#include "MeasureNet.h"
#include "../Common/PathUtil.h"
#include <TlHelp32.h>
#include <WtsApi32.h>
using namespace Gdiplus;
#define DEBUG_VERBOSE (0) // Set 1 if you need verbose logging.
#define ZPOS_FLAGS (SWP_NOMOVE | SWP_NOSIZE | SWP_NOOWNERZORDER | SWP_NOACTIVATE | SWP_NOSENDCHANGING)
enum TIMER
{
TIMER_SHOWDESKTOP = 1,
TIMER_RESUME = 2
};
enum INTERVAL
{
INTERVAL_SHOWDESKTOP = 250,
INTERVAL_RESTOREWINDOWS = 100,
INTERVAL_RESUME = 1000
};
MultiMonitorInfo System::c_Monitors = { 0 };
HWND System::c_Window = nullptr;
HWND System::c_HelperWindow = nullptr;
HWINEVENTHOOK System::c_WinEventHook = nullptr;
bool System::c_ShowDesktop = false;
std::wstring System::c_WorkingDirectory;
std::vector<std::wstring> System::c_IniFileMappings;
/*
** Creates a helper window to detect changes in the system.
**
*/
void System::Initialize(HINSTANCE instance)
{
// Update the CRT timezone variables.
_tzset();
WNDCLASS wc = {0};
wc.lpfnWndProc = (WNDPROC)WndProc;
wc.hInstance = instance;
wc.lpszClassName = L"RainmeterSystem";
ATOM className = RegisterClass(&wc);
c_Window = CreateWindowEx(
WS_EX_TOOLWINDOW,
MAKEINTATOM(className),
L"System",
WS_POPUP | WS_DISABLED,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
nullptr,
nullptr,
instance,
nullptr);
c_HelperWindow = CreateWindowEx(
WS_EX_TOOLWINDOW,
MAKEINTATOM(className),
L"PositioningHelper",
WS_POPUP | WS_DISABLED,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
nullptr,
nullptr,
instance,
nullptr);
WTSRegisterSessionNotification(c_Window, NOTIFY_FOR_THIS_SESSION);
SetWindowPos(c_Window, HWND_BOTTOM, 0, 0, 0, 0, ZPOS_FLAGS);
SetWindowPos(c_HelperWindow, HWND_BOTTOM, 0, 0, 0, 0, ZPOS_FLAGS);
c_Monitors.monitors.reserve(4);
SetMultiMonitorInfo();
WCHAR directory[MAX_PATH];
DWORD len = GetCurrentDirectory(MAX_PATH, directory);
c_WorkingDirectory.assign(directory, len <= MAX_PATH ? len : 0);
c_WinEventHook = SetWinEventHook(
EVENT_SYSTEM_FOREGROUND,
EVENT_SYSTEM_FOREGROUND,
nullptr,
MyWinEventProc,
0,
0,
WINEVENT_OUTOFCONTEXT | WINEVENT_SKIPOWNPROCESS);
SetTimer(c_Window, TIMER_SHOWDESKTOP, INTERVAL_SHOWDESKTOP, nullptr);
}
/*
** Destroys a window.
**
*/
void System::Finalize()
{
KillTimer(c_Window, TIMER_SHOWDESKTOP);
KillTimer(c_Window, TIMER_RESUME);
if (c_WinEventHook)
{
UnhookWinEvent(c_WinEventHook);
c_WinEventHook = nullptr;
}
if (c_HelperWindow)
{
DestroyWindow(c_HelperWindow);
c_HelperWindow = nullptr;
}
if (c_Window)
{
WTSUnRegisterSessionNotification(c_Window);
DestroyWindow(c_Window);
c_Window = nullptr;
}
}
/*
** Retrieves the multi-monitor information.
**
*/
BOOL CALLBACK MyInfoEnumProc(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData)
{
MultiMonitorInfo* m = (MultiMonitorInfo*)dwData;
MONITORINFOEX info = {};
info.cbSize = sizeof(MONITORINFOEX);
GetMonitorInfo(hMonitor, &info);
if (GetRainmeter().GetDebug())
{
LogDebug(info.szDevice);
LogDebugF(L" Flags : %s(0x%08X)", (info.dwFlags & MONITORINFOF_PRIMARY) ? L"PRIMARY " : L"", info.dwFlags);
LogDebugF(L" Handle : 0x%p", hMonitor);
LogDebugF(L" ScreenArea : L=%i, T=%i, R=%i, B=%i (W=%i, H=%i)",
lprcMonitor->left, lprcMonitor->top, lprcMonitor->right, lprcMonitor->bottom,
lprcMonitor->right - lprcMonitor->left, lprcMonitor->bottom - lprcMonitor->top);
LogDebugF(L" WorkArea : L=%i, T=%i, R=%i, B=%i (W=%i, H=%i)",
info.rcWork.left, info.rcWork.top, info.rcWork.right, info.rcWork.bottom,
info.rcWork.right - info.rcWork.left, info.rcWork.bottom - info.rcWork.top);
}
if (m == nullptr) return TRUE;
if (m->useEnumDisplayDevices)
{
for (auto iter = m->monitors.begin(); iter != m->monitors.end(); ++iter)
{
if ((*iter).handle == nullptr && _wcsicmp(info.szDevice, (*iter).deviceName.c_str()) == 0)
{
(*iter).handle = hMonitor;
(*iter).screen = *lprcMonitor;
(*iter).work = info.rcWork;
break;
}
}
}
else // use only EnumDisplayMonitors
{
MonitorInfo monitor;
monitor.active = true;
monitor.handle = hMonitor;
monitor.screen = *lprcMonitor;
monitor.work = info.rcWork;
monitor.deviceName = info.szDevice; // E.g. "\\.\DISPLAY1"
// Get the monitor name (E.g. "Generic Non-PnP Monitor")
DISPLAY_DEVICE ddm = {sizeof(DISPLAY_DEVICE)};
DWORD dwMon = 0;
while (EnumDisplayDevices(info.szDevice, dwMon++, &ddm, 0))
{
if (ddm.StateFlags & DISPLAY_DEVICE_ACTIVE && ddm.StateFlags & DISPLAY_DEVICE_ATTACHED)
{
monitor.monitorName.assign(ddm.DeviceString, wcsnlen(ddm.DeviceString, _countof(ddm.DeviceString)));
break;
}
}
m->monitors.push_back(monitor);
if (info.dwFlags & MONITORINFOF_PRIMARY)
{
// It's primary monitor!
m->primary = (int)m->monitors.size();
}
}
return TRUE;
}
/*
** Returns the number of monitors.
**
*/
size_t System::GetMonitorCount()
{
if (c_Monitors.monitors.empty())
{
SetMultiMonitorInfo();
}
return c_Monitors.monitors.size();
}
/*
** Sets the multi-monitor information.
**
*/
void System::SetMultiMonitorInfo()
{
std::vector<MonitorInfo>& monitors = c_Monitors.monitors;
bool logging = GetRainmeter().GetDebug();
c_Monitors.vsT = GetSystemMetrics(SM_YVIRTUALSCREEN);
c_Monitors.vsL = GetSystemMetrics(SM_XVIRTUALSCREEN);
c_Monitors.vsH = GetSystemMetrics(SM_CYVIRTUALSCREEN);
c_Monitors.vsW = GetSystemMetrics(SM_CXVIRTUALSCREEN);
c_Monitors.primary = 1; // If primary screen is not found, 1st screen is assumed as primary screen.
c_Monitors.useEnumDisplayDevices = true;
c_Monitors.useEnumDisplayMonitors = false;
if (logging)
{
LogDebug(L"------------------------------");
LogDebug(L"* EnumDisplayDevices / EnumDisplaySettings API");
}
DISPLAY_DEVICE dd = {sizeof(DISPLAY_DEVICE)};
if (EnumDisplayDevices(nullptr, 0, &dd, 0))
{
DWORD dwDevice = 0;
do
{
std::wstring msg;
std::wstring deviceName(dd.DeviceName, wcsnlen(dd.DeviceName, _countof(dd.DeviceName)));
std::wstring deviceString;
if (logging)
{
deviceString.assign(dd.DeviceString, wcsnlen(dd.DeviceString, _countof(dd.DeviceString)));
LogDebug(deviceName.c_str());
if (dd.StateFlags & DISPLAY_DEVICE_ACTIVE)
{
msg += L"ACTIVE ";
}
if (dd.StateFlags & DISPLAY_DEVICE_MULTI_DRIVER)
{
msg += L"MULTI ";
}
if (dd.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
{
msg += L"PRIMARY ";
}
if (dd.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER)
{
msg += L"MIRROR ";
}
if (dd.StateFlags & DISPLAY_DEVICE_VGA_COMPATIBLE)
{
msg += L"VGA ";
}
if (dd.StateFlags & DISPLAY_DEVICE_REMOVABLE)
{
msg += L"REMOVABLE ";
}
if (dd.StateFlags & DISPLAY_DEVICE_MODESPRUNED)
{
msg += L"PRUNED ";
}
if (dd.StateFlags & DISPLAY_DEVICE_REMOTE)
{
msg += L"REMOTE ";
}
if (dd.StateFlags & DISPLAY_DEVICE_DISCONNECT)
{
msg += L"DISCONNECT ";
}
}
if ((dd.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER) == 0)
{
MonitorInfo monitor = { 0 };
monitor.handle = nullptr;
monitor.deviceName = deviceName; // E.g. "\\.\DISPLAY1"
// Get the monitor name (E.g. "Generic Non-PnP Monitor")
DISPLAY_DEVICE ddm = {sizeof(DISPLAY_DEVICE)};
DWORD dwMon = 0;
while (EnumDisplayDevices(deviceName.c_str(), dwMon++, &ddm, 0))
{
if (ddm.StateFlags & DISPLAY_DEVICE_ACTIVE && ddm.StateFlags & DISPLAY_DEVICE_ATTACHED)
{
monitor.monitorName.assign(ddm.DeviceString, wcsnlen(ddm.DeviceString, _countof(ddm.DeviceString)));
if (logging)
{
LogDebugF(L" Name : %s", monitor.monitorName.c_str());
if (*dd.DeviceID && *dd.DeviceKey)
{
LogDebugF(L" DeviceID : %s", dd.DeviceID);
LogDebugF(L" DeviceKey : %s", dd.DeviceKey);
}
}
break;
}
}
if (logging)
{
LogDebugF(L" Adapter : %s", deviceString.c_str());
if (*ddm.DeviceID && *ddm.DeviceKey)
{
LogDebugF(L" AdapterID : %s", ddm.DeviceID);
LogDebugF(L" AdapterKey : %s", ddm.DeviceKey);
}
LogDebugF(L" DeviceFlags : %s(0x%08X)", msg.c_str(), dd.StateFlags);
}
if (dd.StateFlags & DISPLAY_DEVICE_ACTIVE)
{
monitor.active = true;
DEVMODE dm = {0};
dm.dmSize = sizeof(DEVMODE);
if (EnumDisplaySettings(deviceName.c_str(), ENUM_CURRENT_SETTINGS, &dm))
{
POINT pos = {dm.dmPosition.x, dm.dmPosition.y};
monitor.handle = MonitorFromPoint(pos, MONITOR_DEFAULTTONULL);
if (logging)
{
msg.clear();
auto buildMessage = [&](LPCWSTR key, LPCWSTR value) -> void
{
if (!msg.empty()) msg += L", ";
msg += key;
msg += L'=';
msg += value;
};
LogDebugF(L" Handle : 0x%p", monitor.handle);
// Pixel Info
if (dm.dmLogPixels > 0) buildMessage(L"LogicalPixels", std::to_wstring(dm.dmLogPixels).c_str());
if (dm.dmFields & DM_BITSPERPEL) buildMessage(L"BitsPerPixel", std::to_wstring(dm.dmBitsPerPel).c_str());
if (dm.dmFields & DM_PELSWIDTH && dm.dmFields & DM_PELSHEIGHT)
{
std::wstring visibleResolution = std::to_wstring(dm.dmPelsWidth);
visibleResolution += L'x';
visibleResolution += std::to_wstring(dm.dmPelsHeight);
buildMessage(L"VisibleResolution", visibleResolution.c_str());
}
if (!msg.empty())
{
LogDebugF(L" PixelInfo : %s", msg.c_str());
msg.clear();
}
// Display Info
if (dm.dmFields & DM_DISPLAYORIENTATION)
{
switch (dm.dmDisplayOrientation)
{
default:
case DMDO_DEFAULT: buildMessage(L"Orientation", L"0°"); break;
case DMDO_90: buildMessage(L"Orientation", L"90° (clockwise)"); break;
case DMDO_180: buildMessage(L"Orientation", L"180° (clockwise)"); break;
case DMDO_270: buildMessage(L"Orientation", L"270° (clockwise)"); break;
}
}
if (dm.dmFields & DM_DISPLAYFREQUENCY)
{
buildMessage(L"Frequency", std::to_wstring(dm.dmDisplayFrequency).c_str());
msg += L"Hz";
}
if (!msg.empty())
{
LogDebugF(L" DisplayInfo : %s", msg.c_str());
msg.clear();
}
// Display Flags
if (dm.dmFields & DM_DISPLAYFLAGS)
{
std::wstring mode = L"Non-Interlaced";
if (dm.dmDisplayFlags & DM_INTERLACED)
{
mode = L"Interlaced";
}
if (dm.dmFields & DMDISPLAYFLAGS_TEXTMODE) mode += L"|TextMode";
if (dm.dmDisplayFlags & 0x00000001) mode += L"|Grayscale"; //DM_GRAYSCALE, no longer valid?
buildMessage(L"Mode", mode.c_str());
}
if (dm.dmFields & DM_DISPLAYFIXEDOUTPUT)
{
std::wstring output = L"Default";
switch (dm.dmDisplayFixedOutput)
{
default:
case DMDFO_DEFAULT: buildMessage(L"FixedOutput", L"Default"); break;
case DMDFO_CENTER: buildMessage(L"FixedOutput", L"Center"); break;
case DMDFO_STRETCH: buildMessage(L"FixedOutput", L"Stretch"); break;
}
}
if (!msg.empty())
{
LogDebugF(L" DisplayFlags: %s", msg.c_str());
msg.clear();
}
}
}
if (monitor.handle != nullptr)
{
MONITORINFO info = {sizeof(MONITORINFO)};
GetMonitorInfo(monitor.handle, &info);
monitor.screen = info.rcMonitor;
monitor.work = info.rcWork;
if (logging)
{
LogDebugF(L" ScreenArea : L=%i, T=%i, R=%i, B=%i (W=%i, H=%i)",
info.rcMonitor.left, info.rcMonitor.top, info.rcMonitor.right, info.rcMonitor.bottom,
info.rcMonitor.right - info.rcMonitor.left, info.rcMonitor.bottom - info.rcMonitor.top);
LogDebugF(L" WorkArea : L=%i, T=%i, R=%i, B=%i (W=%i, H=%i)",
info.rcWork.left, info.rcWork.top, info.rcWork.right, info.rcWork.bottom,
info.rcWork.right - info.rcWork.left, info.rcWork.bottom - info.rcWork.top);
}
}
else // monitor not found
{
c_Monitors.useEnumDisplayMonitors = true;
}
}
else
{
monitor.active = false;
}
monitors.push_back(monitor);
if (dd.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
{
// It's primary monitor!
c_Monitors.primary = (int)monitors.size();
}
}
else
{
if (logging)
{
LogDebugF(L" Adapter : %s", deviceString.c_str());
LogDebugF(L" Flags : %s(0x%08X)", msg.c_str(), dd.StateFlags);
}
}
++dwDevice;
}
while (EnumDisplayDevices(nullptr, dwDevice, &dd, 0));
}
if (monitors.empty()) // Failed to enumerate the non-mirroring monitors
{
LogWarning(L"Failed to enumerate the non-mirroring monitors. Only EnumDisplayMonitors is used instead.");
c_Monitors.useEnumDisplayDevices = false;
c_Monitors.useEnumDisplayMonitors = true;
}
if (logging)
{
LogDebug(L"------------------------------");
LogDebug(L"* EnumDisplayMonitors API");
}
if (c_Monitors.useEnumDisplayMonitors)
{
EnumDisplayMonitors(nullptr, nullptr, MyInfoEnumProc, (LPARAM)(&c_Monitors));
if (monitors.empty()) // Failed to enumerate the monitors
{
LogWarning(L"Failed to enumerate monitors. Using dummy monitor info.");
c_Monitors.useEnumDisplayMonitors = false;
MonitorInfo monitor;
monitor.active = true;
POINT pos = {0, 0};
monitor.handle = MonitorFromPoint(pos, MONITOR_DEFAULTTOPRIMARY);
monitor.screen.left = 0;
monitor.screen.top = 0;
monitor.screen.right = GetSystemMetrics(SM_CXSCREEN);
monitor.screen.bottom = GetSystemMetrics(SM_CYSCREEN);
if (SystemParametersInfo(SPI_GETWORKAREA, 0, &(monitor.work), 0) == 0) // failed
{
monitor.work = monitor.screen;
}
monitor.deviceName = L"DUMMY";
monitors.push_back(monitor);
c_Monitors.primary = 1;
}
}
else
{
if (logging)
{
EnumDisplayMonitors(nullptr, nullptr, MyInfoEnumProc, (LPARAM)nullptr); // Only logging
}
}
if (logging)
{
LogDebug(L"------------------------------");
std::wstring method = L"* METHOD: ";
if (c_Monitors.useEnumDisplayDevices)
{
method += L"EnumDisplayDevices + ";
method += c_Monitors.useEnumDisplayMonitors ? L"EnumDisplayMonitors Mode" : L"EnumDisplaySettings Mode";
}
else
{
method += c_Monitors.useEnumDisplayMonitors ? L"EnumDisplayMonitors Mode" : L"Dummy Mode";
}
LogDebug(method.c_str());
LogDebugF(L"* MONITORS: Count=%i, Primary=@%i", (int)monitors.size(), c_Monitors.primary);
LogDebug(L"@0: Virtual screen");
LogDebugF(L" L=%i, T=%i, R=%i, B=%i (W=%i, H=%i)",
c_Monitors.vsL, c_Monitors.vsT, c_Monitors.vsL + c_Monitors.vsW, c_Monitors.vsT + c_Monitors.vsH,
c_Monitors.vsW, c_Monitors.vsH);
int i = 1;
for (auto iter = monitors.cbegin(); iter != monitors.cend(); ++iter, ++i)
{
if ((*iter).active)
{
LogDebugF(L"@%i: %s (active), MonitorName: %s", i, (*iter).deviceName.c_str(), (*iter).monitorName.c_str());
LogDebugF(L" L=%i, T=%i, R=%i, B=%i (W=%i, H=%i)",
(*iter).screen.left, (*iter).screen.top, (*iter).screen.right, (*iter).screen.bottom,
(*iter).screen.right - (*iter).screen.left, (*iter).screen.bottom - (*iter).screen.top);
}
else if ((*iter).monitorName.empty())
{
LogDebugF(L"@%i: %s (inactive)", i, (*iter).deviceName.c_str());
}
else
{
LogDebugF(L"@%i: %s (inactive), MonitorName: %s", i, (*iter).deviceName.c_str(), (*iter).monitorName.c_str());
}
}
LogDebug(L"------------------------------");
}
}
/*
** Updates the workarea information.
**
*/
void System::UpdateWorkareaInfo()
{
std::vector<MonitorInfo>& monitors = c_Monitors.monitors;
if (monitors.empty())
{
SetMultiMonitorInfo();
return;
}
int i = 1;
for (auto iter = monitors.begin(); iter != monitors.end(); ++iter, ++i)
{
if ((*iter).active && (*iter).handle != nullptr)
{
MONITORINFO info = {sizeof(MONITORINFO)};
GetMonitorInfo((*iter).handle, &info);
(*iter).work = info.rcWork;
if (GetRainmeter().GetDebug())
{
LogDebugF(L"WorkArea@%i : L=%i, T=%i, R=%i, B=%i (W=%i, H=%i)",
i,
info.rcWork.left, info.rcWork.top, info.rcWork.right, info.rcWork.bottom,
info.rcWork.right - info.rcWork.left, info.rcWork.bottom - info.rcWork.top);
}
}
}
}
/*
** Finds the Default Shell's window.
**
*/
HWND System::GetDefaultShellWindow()
{
static HWND c_ShellW = nullptr; // cache
HWND ShellW = GetShellWindow();
if (ShellW)
{
if (ShellW == c_ShellW)
{
return ShellW;
}
else
{
const int classLen = _countof(L"Progman") + 1;
WCHAR className[classLen];
if (!(GetClassName(ShellW, className, classLen) > 0 &&
wcscmp(className, L"Progman") == 0))
{
ShellW = nullptr;
}
}
}
c_ShellW = ShellW;
return ShellW;
}
/*
** Finds the WorkerW window.
** If the WorkerW window is not active, returns nullptr.
**
*/
HWND System::GetWorkerW()
{
static HWND c_DefView = nullptr; // cache
HWND ShellW = GetDefaultShellWindow();
if (!ShellW) return nullptr; // Default Shell (Explorer) not running
if (c_DefView && IsWindow(c_DefView))
{
HWND parent = GetAncestor(c_DefView, GA_PARENT);
if (parent)
{
if (parent == ShellW)
{
return nullptr;
}
else
{
const int classLen = _countof(L"WorkerW") + 1;
WCHAR className[classLen];
if (GetClassName(parent, className, classLen) > 0 &&
wcscmp(className, L"WorkerW") == 0)
{
return parent;
}
}
}
}
HWND WorkerW = nullptr, DefView = FindWindowEx(ShellW, nullptr, L"SHELLDLL_DefView", L"");
if (DefView == nullptr)
{
while (WorkerW = FindWindowEx(nullptr, WorkerW, L"WorkerW", L""))
{
if (IsWindowVisible(WorkerW) &&
BelongToSameProcess(ShellW, WorkerW) &&
(DefView = FindWindowEx(WorkerW, nullptr, L"SHELLDLL_DefView", L"")))
{
break;
}
}
}
c_DefView = DefView;
return WorkerW;
}
/*
** Returns the first window whose position is not ZPOSITION_ONDESKTOP,
** ZPOSITION_BOTTOM, or ZPOSITION_NORMAL.
**
*/
HWND System::GetBackmostTopWindow()
{
HWND winPos = c_HelperWindow;
// Skip all ZPOSITION_ONDESKTOP, ZPOSITION_BOTTOM, and ZPOSITION_NORMAL windows
while (winPos = ::GetNextWindow(winPos, GW_HWNDPREV))
{
Skin* wnd = GetRainmeter().GetSkin(winPos);
if (!wnd ||
(wnd->GetWindowZPosition() != ZPOSITION_NORMAL &&
wnd->GetWindowZPosition() != ZPOSITION_ONDESKTOP &&
wnd->GetWindowZPosition() != ZPOSITION_ONBOTTOM))
{
break;
}
}
return winPos;
}
/*
** Checks whether the given windows belong to the same process.
**
*/
bool System::BelongToSameProcess(HWND hwndA, HWND hwndB)
{
DWORD procAId = 0, procBId = 0;
GetWindowThreadProcessId(hwndA, &procAId);
GetWindowThreadProcessId(hwndB, &procBId);
return (procAId == procBId);
}
/*
** Retrieves the Rainmeter's meter windows in Z-order.
**
*/
BOOL CALLBACK MyEnumWindowsProc(HWND hwnd, LPARAM lParam)
{
bool logging = GetRainmeter().GetDebug() && DEBUG_VERBOSE;
const int classLen = _countof(METERWINDOW_CLASS_NAME) + (DEBUG_VERBOSE ? 32 : 1);
WCHAR className[classLen];
Skin* Window;
WCHAR flag;
if (GetClassName(hwnd, className, classLen) > 0 &&
wcscmp(className, METERWINDOW_CLASS_NAME) == 0 &&
(Window = GetRainmeter().GetSkin(hwnd)))
{
ZPOSITION zPos = Window->GetWindowZPosition();
if (zPos == ZPOSITION_ONDESKTOP ||
(zPos == ZPOSITION_NORMAL && GetRainmeter().IsNormalStayDesktop()) ||
zPos == ZPOSITION_ONBOTTOM)
{
if (lParam)
{
((std::vector<Skin*>*)lParam)->push_back(Window);
}
if (logging) flag = L'+';
}
else
{
if (logging) flag = L'-';
}
if (logging)
{
LogDebugF(L"%c [%c] 0x%p : %s (Name: \"%s\", zPos=%i)",
flag, IsWindowVisible(hwnd) ? L'V' : L'H', hwnd, className, Window->GetFolderPath().c_str(), (int)zPos);
}
}
else
{
if (logging)
{
flag = (hwnd == System::GetHelperWindow()) ? L'o' : ' ';
LogDebugF(L"%c [%c] 0x%p : %s", flag, IsWindowVisible(hwnd) ? L'V' : L'H', hwnd, className);
}
}
return TRUE;
}
/*
** Arranges the meter window in Z-order.
**
*/
void System::ChangeZPosInOrder()
{
bool logging = GetRainmeter().GetDebug() && DEBUG_VERBOSE;
std::vector<Skin*> windowsInZOrder;
if (logging) LogDebug(L"1: ----- BEFORE -----");
// Retrieve the Rainmeter's meter windows in Z-order
EnumWindows(MyEnumWindowsProc, (LPARAM)(&windowsInZOrder));
auto resetZPos = [&](ZPOSITION zpos)
{
// Reset ZPos in Z-order (Bottom)
std::vector<Skin*>::const_iterator iter = windowsInZOrder.begin();
for ( ; iter != windowsInZOrder.end(); ++iter)
{
if ((*iter)->GetWindowZPosition() == zpos)
{
(*iter)->ChangeZPos(zpos); // reset
}
}
};
if (GetRainmeter().IsNormalStayDesktop())
{
resetZPos(ZPOSITION_NORMAL);
}
if (!c_ShowDesktop)
{
resetZPos(ZPOSITION_ONBOTTOM);
}
resetZPos(ZPOSITION_ONDESKTOP);
if (logging)
{
LogDebug(L"2: ----- AFTER -----");
// Log all windows in Z-order
EnumWindows(MyEnumWindowsProc, (LPARAM)nullptr);
}
}
/*
** Moves the helper window to the reference position.
**
*/
void System::PrepareHelperWindow(HWND WorkerW)
{
bool logging = GetRainmeter().GetDebug() && DEBUG_VERBOSE;
SetWindowPos(c_Window, HWND_BOTTOM, 0, 0, 0, 0, ZPOS_FLAGS); // always on bottom
if (c_ShowDesktop && WorkerW)
{
// Set WS_EX_TOPMOST flag
SetWindowPos(c_HelperWindow, HWND_TOPMOST, 0, 0, 0, 0, ZPOS_FLAGS);
// Find the "backmost" topmost window
HWND hwnd = WorkerW;
while (hwnd = ::GetNextWindow(hwnd, GW_HWNDPREV))
{
if (GetWindowLongPtr(hwnd, GWL_EXSTYLE) & WS_EX_TOPMOST)
{
WCHAR className[64], windowText[64];
if (logging)
{
GetClassName(hwnd, className, 64);
GetWindowText(hwnd, windowText, 64);
SetLastError(ERROR_SUCCESS);
}
// Insert the helper window after the found window
if (0 != SetWindowPos(c_HelperWindow, hwnd, 0, 0, 0, 0, ZPOS_FLAGS))
{
if (logging)
{
LogDebugF(L"System: HelperWindow: hwnd=0x%p (WorkerW=0x%p), hwndInsertAfter=0x%p (\"%s\" %s) - %s",
c_HelperWindow, WorkerW, hwnd, windowText, className, (GetWindowLongPtr(c_HelperWindow, GWL_EXSTYLE) & WS_EX_TOPMOST) ? L"TOPMOST" : L"NORMAL");
}
return;
}
if (logging)
{
DWORD err = GetLastError();
LogDebugF(L"System: HelperWindow: hwnd=0x%p (WorkerW=0x%p), hwndInsertAfter=0x%p (\"%s\" %s) - FAILED (ErrorCode=0x%08X)",
c_HelperWindow, WorkerW, hwnd, windowText, className, err);
}
}
}
if (logging)
{
LogDebugF(L"System: HelperWindow: hwnd=0x%p (WorkerW=0x%p), hwndInsertAfter=HWND_TOPMOST - %s",
c_HelperWindow, WorkerW, (GetWindowLongPtr(c_HelperWindow, GWL_EXSTYLE) & WS_EX_TOPMOST) ? L"TOPMOST" : L"NORMAL");
}
}
else
{
// Insert the helper window to the bottom
SetWindowPos(c_HelperWindow, HWND_BOTTOM, 0, 0, 0, 0, ZPOS_FLAGS);
if (logging)
{
LogDebugF(L"System: HelperWindow: hwnd=0x%p (WorkerW=0x%p), hwndInsertAfter=HWND_BOTTOM - %s",
c_HelperWindow, WorkerW, (GetWindowLongPtr(c_HelperWindow, GWL_EXSTYLE) & WS_EX_TOPMOST) ? L"TOPMOST" : L"NORMAL");
}
}
}
/*
** Changes the "Show Desktop" state.
**
*/
bool System::CheckDesktopState(HWND WorkerW)
{
HWND hwnd = nullptr;
if (WorkerW && IsWindowVisible(WorkerW))
{
hwnd = FindWindowEx(nullptr, WorkerW, L"RainmeterSystem", L"System");
}
bool stateChanged = (hwnd && !c_ShowDesktop) || (!hwnd && c_ShowDesktop);
if (stateChanged)
{
c_ShowDesktop = !c_ShowDesktop;
if (GetRainmeter().GetDebug())
{
LogDebugF(L"System: \"Show %s\" has been detected.",
c_ShowDesktop ? L"desktop" : L"open windows");
}
PrepareHelperWindow(WorkerW);
ChangeZPosInOrder();
if (c_ShowDesktop)
{
SetTimer(c_Window, TIMER_SHOWDESKTOP, INTERVAL_RESTOREWINDOWS, nullptr);
}
else
{
SetTimer(c_Window, TIMER_SHOWDESKTOP, INTERVAL_SHOWDESKTOP, nullptr);
}
}
return stateChanged;
}
/*
** The event hook procedure
**
*/
void CALLBACK System::MyWinEventProc(HWINEVENTHOOK hWinEventHook, DWORD event, HWND hwnd, LONG idObject, LONG idChild, DWORD dwEventThread, DWORD dwmsEventTime)
{
if (event == EVENT_SYSTEM_FOREGROUND)
{
if (!c_ShowDesktop)
{
const int classLen = _countof(L"WorkerW") + 1;
WCHAR className[classLen];
if (GetClassName(hwnd, className, classLen) > 0 &&
wcscmp(className, L"WorkerW") == 0 &&
BelongToSameProcess(GetDefaultShellWindow(), hwnd))
{
const int max = 5;
int loop = 0;
while (loop < max && FindWindowEx(hwnd, nullptr, L"SHELLDLL_DefView", L"") == nullptr)
{
Sleep(2); // Wait for 2-16 ms before retrying
++loop;
}
if (loop < max)
{
loop = 0;
while (loop < max && !CheckDesktopState(hwnd))
{
Sleep(2); // Wait for 2-16 ms before retrying
++loop;
}
}
}
}