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Taskbar10: Fixed a bug where SCOOBE would repeatedly crash Explorer when Language Switcher is set to anything other than Windows 11 (the default) ^2

pull/3235/head
Amrsatrio 2 years ago
parent
fe7f8005fb
commit
5c35f5862f
4 changed files with 339 additions and 178 deletions
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  1. 5
      ExplorerPatcher/ExplorerPatcher.vcxproj
  2. 198
      ExplorerPatcher/InputSwitch.cpp
  3. 122
      ExplorerPatcher/InputSwitch.h
  4. 192
      ExplorerPatcher/dllmain.c

5
ExplorerPatcher/ExplorerPatcher.vcxproj
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@ -266,6 +266,10 @@
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild> <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild> <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
</ClCompile> </ClCompile>
<ClCompile Include="InputSwitch.cpp">
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
</ClCompile>
<ClCompile Include="Localization.cpp" /> <ClCompile Include="Localization.cpp" />
<ClCompile Include="lvt.c"> <ClCompile Include="lvt.c">
<ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild> <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
@ -334,6 +338,7 @@
<ClInclude Include="hooking.h" /> <ClInclude Include="hooking.h" />
<ClInclude Include="ep_private.h" /> <ClInclude Include="ep_private.h" />
<ClInclude Include="ImmersiveFlyouts.h" /> <ClInclude Include="ImmersiveFlyouts.h" />
<ClInclude Include="InputSwitch.h" />
<ClInclude Include="Localization.h" /> <ClInclude Include="Localization.h" />
<ClInclude Include="lvt.h" /> <ClInclude Include="lvt.h" />
<ClInclude Include="osutility.h" /> <ClInclude Include="osutility.h" />

198
ExplorerPatcher/InputSwitch.cpp
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@ -0,0 +1,198 @@
#include "InputSwitch.h"
#include <shellscalingapi.h>
#include <wrl/implements.h>
#include <wil/result_macros.h>
#define TB_POS_NOWHERE 0
#define TB_POS_BOTTOM 1
#define TB_POS_TOP 2
#define TB_POS_LEFT 3
#define TB_POS_RIGHT 4
extern "C" UINT GetTaskbarLocationAndSize(POINT ptCursor, RECT* rc);
extern "C" __MIDL___MIDL_itf_inputswitchserver_0000_0000_0001 dwIMEStyle;
extern "C" HRESULT CInputSwitchControl_ModifyAnchor(UINT dwNumberOfProfiles, RECT* lpRect);
HRESULT CInputSwitchControl_ModifyAnchor(UINT dwNumberOfProfiles, RECT* lpRect)
{
if (!dwIMEStyle) // impossible case (this is not called for the Windows 11 language switcher), but just in case
{
return S_FALSE;
}
HWND hWndTaskbar = FindWindowW(L"Shell_TrayWnd", NULL);
UINT dpiX = 96, dpiY = 96;
HRESULT hr = GetDpiForMonitor(
MonitorFromWindow(hWndTaskbar, MONITOR_DEFAULTTOPRIMARY),
MDT_DEFAULT,
&dpiX,
&dpiY
);
double dpix = dpiX / 96.0;
double dpiy = dpiY / 96.0;
//printf("RECT %d %d %d %d - %d %d\n", lpRect->left, lpRect->right, lpRect->top, lpRect->bottom, dwNumberOfProfiles, a3);
RECT rc;
GetWindowRect(hWndTaskbar, &rc);
POINT pt;
pt.x = rc.left;
pt.y = rc.top;
UINT tbPos = GetTaskbarLocationAndSize(pt, &rc);
if (tbPos == TB_POS_BOTTOM)
{
}
else if (tbPos == TB_POS_TOP)
{
if (dwIMEStyle == 1) // Windows 10 (with Language preferences link)
{
lpRect->top = rc.top + (rc.bottom - rc.top) + (UINT)(((double)dwNumberOfProfiles * (60.0 * dpiy)) + (5.0 * dpiy * 4.0) + (dpiy) + (48.0 * dpiy));
}
else if (dwIMEStyle == 2 || dwIMEStyle == 3 || dwIMEStyle == 4 || dwIMEStyle == 5) // LOGONUI, UAC, Windows 10, OOBE
{
lpRect->top = rc.top + (rc.bottom - rc.top) + (UINT)(((double)dwNumberOfProfiles * (60.0 * dpiy)) + (5.0 * dpiy * 2.0));
}
}
else if (tbPos == TB_POS_LEFT)
{
if (dwIMEStyle == 1 || dwIMEStyle == 2 || dwIMEStyle == 3 || dwIMEStyle == 4 || dwIMEStyle == 5)
{
lpRect->right = rc.left + (rc.right - rc.left) + (UINT)((double)(300.0 * dpix));
lpRect->top += (lpRect->bottom - lpRect->top);
}
}
if (tbPos == TB_POS_RIGHT)
{
if (dwIMEStyle == 1 || dwIMEStyle == 2 || dwIMEStyle == 3 || dwIMEStyle == 4 || dwIMEStyle == 5)
{
lpRect->right = lpRect->right - (rc.right - rc.left);
lpRect->top += (lpRect->bottom - lpRect->top);
}
}
if (dwIMEStyle == 4)
{
lpRect->right -= (UINT)((double)(300.0 * dpix)) - (lpRect->right - lpRect->left);
}
return S_OK;
}
class CInputSwitchControlProxy : public Microsoft::WRL::RuntimeClass<Microsoft::WRL::RuntimeClassFlags<Microsoft::WRL::ClassicCom>, IInputSwitchControl>
{
public:
CInputSwitchControlProxy()
: m_type((__MIDL___MIDL_itf_inputswitchserver_0000_0000_0001)-1)
{
}
HRESULT RuntimeClassInitialize(IInputSwitchControl* original)
{
m_original = original;
return S_OK;
}
STDMETHODIMP Init(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0001 type) override
{
m_type = type;
return m_original->Init(type == ISCT_IDL_DESKTOP && dwIMEStyle != ISCT_IDL_DESKTOP ? dwIMEStyle : type);
}
STDMETHODIMP ShowInputSwitch(const RECT* rect) override
{
RECT myRect = *rect;
if (m_type == ISCT_IDL_DESKTOP)
{
UINT dwNumberOfProfiles = 0;
BOOL bImePresent = FALSE;
m_original->GetProfileCount(&dwNumberOfProfiles, &bImePresent);
CInputSwitchControl_ModifyAnchor(dwNumberOfProfiles, &myRect);
}
return m_original->ShowInputSwitch(&myRect);
}
STDMETHODIMP SetCallback(IInputSwitchCallback* callback) override { return m_original->SetCallback(callback); }
STDMETHODIMP GetProfileCount(UINT* count, BOOL* bOutImePresent) override { return m_original->GetProfileCount(count, bOutImePresent); }
STDMETHODIMP GetCurrentProfile(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0002* data) override { return m_original->GetCurrentProfile(data); }
STDMETHODIMP RegisterHotkeys() override { return m_original->RegisterHotkeys(); }
STDMETHODIMP ClickImeModeItem(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0004 type, POINT point, const RECT* rect) override { return m_original->ClickImeModeItem(type, point, rect); }
STDMETHODIMP ForceHide() override { return m_original->ForceHide(); }
STDMETHODIMP ShowTouchKeyboardInputSwitch(const RECT* rect, __MIDL___MIDL_itf_inputswitchserver_0000_0000_0006 align, int a3, DWORD a4, __MIDL___MIDL_itf_inputswitchserver_0000_0000_0005 a5) override { return m_original->ShowTouchKeyboardInputSwitch(rect, align, a3, a4, a5); }
STDMETHODIMP GetContextFlags(DWORD* flags) override { return m_original->GetContextFlags(flags); }
STDMETHODIMP SetContextOverrideMode(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0008 mode) override { return m_original->SetContextOverrideMode(mode); }
STDMETHODIMP GetCurrentImeModeItem(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0003* data) override { return m_original->GetCurrentImeModeItem(data); }
STDMETHODIMP ActivateInputProfile(const WCHAR* profile) override { return m_original->ActivateInputProfile(profile); }
STDMETHODIMP SetUserSid(const WCHAR* sid) override { return m_original->SetUserSid(sid); }
private:
Microsoft::WRL::ComPtr<IInputSwitchControl> m_original;
__MIDL___MIDL_itf_inputswitchserver_0000_0000_0001 m_type;
};
HRESULT CInputSwitchControlProxy_CreateInstance(IInputSwitchControl* original, REFIID riid, void** ppvObject)
{
Microsoft::WRL::ComPtr<CInputSwitchControlProxy> proxy;
RETURN_IF_FAILED(Microsoft::WRL::MakeAndInitialize<CInputSwitchControlProxy>(&proxy, original));
RETURN_HR(proxy.CopyTo(riid, ppvObject));
}
class CInputSwitchControlProxySV2 : public Microsoft::WRL::RuntimeClass<Microsoft::WRL::RuntimeClassFlags<Microsoft::WRL::ClassicCom>, IInputSwitchControlSV2>
{
public:
CInputSwitchControlProxySV2()
: m_type((__MIDL___MIDL_itf_inputswitchserver_0000_0000_0001)-1)
{
}
HRESULT RuntimeClassInitialize(IInputSwitchControlSV2* original)
{
m_original = original;
return S_OK;
}
STDMETHODIMP Init(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0001 type) override
{
m_type = type;
return m_original->Init(type == ISCT_IDL_DESKTOP && dwIMEStyle != ISCT_IDL_DESKTOP ? dwIMEStyle : type);
}
STDMETHODIMP ShowInputSwitch(const RECT* rect) override
{
RECT myRect = *rect;
if (m_type == ISCT_IDL_DESKTOP)
{
UINT dwNumberOfProfiles = 0;
BOOL bImePresent = FALSE;
m_original->GetProfileCount(&dwNumberOfProfiles, &bImePresent);
CInputSwitchControl_ModifyAnchor(dwNumberOfProfiles, &myRect);
}
return m_original->ShowInputSwitch(&myRect);
}
STDMETHODIMP SetCallback(IInputSwitchCallback* callback) override { return m_original->SetCallback(callback); }
STDMETHODIMP GetProfileCount(UINT* count, BOOL* bOutImePresent) override { return m_original->GetProfileCount(count, bOutImePresent); }
STDMETHODIMP GetCurrentProfile(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0002* data) override { return m_original->GetCurrentProfile(data); }
STDMETHODIMP RegisterHotkeys() override { return m_original->RegisterHotkeys(); }
STDMETHODIMP ClickImeModeItem(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0004 type, POINT point, const RECT* rect) override { return m_original->ClickImeModeItem(type, point, rect); }
STDMETHODIMP ClickImeModeItemWithAnchor(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0004 type, IUnknown* anchor) override { return m_original->ClickImeModeItemWithAnchor(type, anchor); }
STDMETHODIMP ForceHide() override { return m_original->ForceHide(); }
STDMETHODIMP ShowTouchKeyboardInputSwitch(const RECT* rect, __MIDL___MIDL_itf_inputswitchserver_0000_0000_0006 align, int a3, DWORD a4, __MIDL___MIDL_itf_inputswitchserver_0000_0000_0005 a5) override { return m_original->ShowTouchKeyboardInputSwitch(rect, align, a3, a4, a5); }
STDMETHODIMP GetContextFlags(DWORD* flags) override { return m_original->GetContextFlags(flags); }
STDMETHODIMP SetContextOverrideMode(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0008 mode) override { return m_original->SetContextOverrideMode(mode); }
STDMETHODIMP GetCurrentImeModeItem(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0003* data) override { return m_original->GetCurrentImeModeItem(data); }
STDMETHODIMP ActivateInputProfile(const WCHAR* profile) override { return m_original->ActivateInputProfile(profile); }
STDMETHODIMP SetUserSid(const WCHAR* sid) override { return m_original->SetUserSid(sid); }
private:
Microsoft::WRL::ComPtr<IInputSwitchControlSV2> m_original;
__MIDL___MIDL_itf_inputswitchserver_0000_0000_0001 m_type;
};
HRESULT CInputSwitchControlProxySV2_CreateInstance(IInputSwitchControlSV2* original, REFIID riid, void** ppvObject)
{
Microsoft::WRL::ComPtr<CInputSwitchControlProxySV2> proxy;
RETURN_IF_FAILED(Microsoft::WRL::MakeAndInitialize<CInputSwitchControlProxySV2>(&proxy, original));
RETURN_HR(proxy.CopyTo(riid, ppvObject));
}

122
ExplorerPatcher/InputSwitch.h
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@ -0,0 +1,122 @@
#pragma once
#include <Windows.h>
DEFINE_GUID(CLSID_InputSwitchControl, 0xb9bc2a50, 0x43c3, 0x41aa, 0xa0, 0x86, 0x5d, 0xb1, 0x4e, 0x18, 0x4b, 0xae);
DEFINE_GUID(IID_IInputSwitchControl, 0xb9bc2a50, 0x43c3, 0x41aa, 0xa0, 0x82, 0x5d, 0xb1, 0x4e, 0x18, 0x4b, 0xae);
enum __MIDL___MIDL_itf_inputswitchserver_0000_0000_0001
{
ISCT_IDL_DESKTOP,
ISCT_IDL_TOUCHKEYBOARD,
ISCT_IDL_LOGONUI,
ISCT_IDL_UAC,
ISCT_IDL_SETTINGSPANE,
ISCT_IDL_OOBE,
ISCT_IDL_USEROOBE
};
struct __MIDL___MIDL_itf_inputswitchserver_0000_0000_0002
{
int dummy; // We don't need its contents
};
struct __MIDL___MIDL_itf_inputswitchserver_0000_0000_0003
{
WCHAR* pszTooltip;
HICON hIcon;
BOOL fDisabled;
BOOL fHidden;
WCHAR* pszIconGlyph;
};
enum __MIDL___MIDL_itf_inputswitchserver_0000_0000_0004
{
INPUT_SWITCH_IDL_IME_CLICK_TYPE_LEFT,
INPUT_SWITCH_IDL_IME_CLICK_TYPE_RIGHT,
INPUT_SWITCH_IDL_IME_CLICK_TYPE_LEFT_DISABLED
};
enum __MIDL___MIDL_itf_inputswitchserver_0000_0000_0005
{
INPUT_SWITCH_IDL_MODALITY_STANDARDKEYBOARD = 0x1,
INPUT_SWITCH_IDL_MODALITY_SPLITKEYBOARD = 0x2,
INPUT_SWITCH_IDL_MODALITY_CLASSICKEYBOARD = 0x4,
INPUT_SWITCH_IDL_MODALITY_HANDWRITING = 0x8,
INPUT_SWITCH_IDL_MODALITY_HIDE = 0x10,
INPUT_SWITCH_IDL_MODALITY_ONEHANDEDKEYBOARD = 0x20,
};
enum __MIDL___MIDL_itf_inputswitchserver_0000_0000_0006
{
INPUT_SWITCH_IDL_ALIGN_DEFAULT,
INPUT_SWITCH_IDL_ALIGN_RIGHT_EDGE,
INPUT_SWITCH_IDL_ALIGN_LEFT_EDGE,
};
enum __MIDL___MIDL_itf_inputswitchserver_0000_0000_0008
{
INPUT_SWITCH_IDL_CFOM_NO_OVERRIDE,
INPUT_SWITCH_IDL_CFOM_DESKTOP,
INPUT_SWITCH_IDL_CFOM_IMMERSIVE,
};
interface IInputSwitchCallback;
#ifdef __cplusplus
MIDL_INTERFACE("b9bc2a50-43c3-41aa-a082-5db14e184bae")
IInputSwitchControl : IUnknown
{
virtual HRESULT STDMETHODCALLTYPE Init(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0001) = 0;
virtual HRESULT STDMETHODCALLTYPE SetCallback(IInputSwitchCallback*) = 0;
virtual HRESULT STDMETHODCALLTYPE ShowInputSwitch(const RECT*) = 0;
virtual HRESULT STDMETHODCALLTYPE GetProfileCount(UINT*, BOOL*) = 0;
virtual HRESULT STDMETHODCALLTYPE GetCurrentProfile(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0002*) = 0;
virtual HRESULT STDMETHODCALLTYPE RegisterHotkeys() = 0;
virtual HRESULT STDMETHODCALLTYPE ClickImeModeItem(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0004, POINT, const RECT*) = 0;
virtual HRESULT STDMETHODCALLTYPE ForceHide() = 0;
virtual HRESULT STDMETHODCALLTYPE ShowTouchKeyboardInputSwitch(const RECT*, __MIDL___MIDL_itf_inputswitchserver_0000_0000_0006, int, DWORD, __MIDL___MIDL_itf_inputswitchserver_0000_0000_0005) = 0;
virtual HRESULT STDMETHODCALLTYPE GetContextFlags(DWORD*) = 0;
virtual HRESULT STDMETHODCALLTYPE SetContextOverrideMode(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0008) = 0;
virtual HRESULT STDMETHODCALLTYPE GetCurrentImeModeItem(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0003*) = 0;
virtual HRESULT STDMETHODCALLTYPE ActivateInputProfile(const WCHAR*) = 0;
virtual HRESULT STDMETHODCALLTYPE SetUserSid(const WCHAR*) = 0;
};
#else
typedef interface IInputSwitchControl IInputSwitchControl;
#endif
#ifdef __cplusplus
MIDL_INTERFACE("b9bc2a50-43c3-41aa-a082-5db14e184bae")
IInputSwitchControlSV2 : IUnknown
{
virtual HRESULT STDMETHODCALLTYPE Init(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0001) = 0;
virtual HRESULT STDMETHODCALLTYPE SetCallback(IInputSwitchCallback*) = 0;
virtual HRESULT STDMETHODCALLTYPE ShowInputSwitch(const RECT*) = 0;
virtual HRESULT STDMETHODCALLTYPE GetProfileCount(UINT*, BOOL*) = 0;
virtual HRESULT STDMETHODCALLTYPE GetCurrentProfile(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0002*) = 0;
virtual HRESULT STDMETHODCALLTYPE RegisterHotkeys() = 0;
virtual HRESULT STDMETHODCALLTYPE ClickImeModeItem(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0004, POINT, const RECT*) = 0;
virtual HRESULT STDMETHODCALLTYPE ClickImeModeItemWithAnchor(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0004, IUnknown*) = 0;
virtual HRESULT STDMETHODCALLTYPE ForceHide() = 0;
virtual HRESULT STDMETHODCALLTYPE ShowTouchKeyboardInputSwitch(const RECT*, __MIDL___MIDL_itf_inputswitchserver_0000_0000_0006, int, DWORD, __MIDL___MIDL_itf_inputswitchserver_0000_0000_0005) = 0;
virtual HRESULT STDMETHODCALLTYPE GetContextFlags(DWORD*) = 0;
virtual HRESULT STDMETHODCALLTYPE SetContextOverrideMode(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0008) = 0;
virtual HRESULT STDMETHODCALLTYPE GetCurrentImeModeItem(__MIDL___MIDL_itf_inputswitchserver_0000_0000_0003*) = 0;
virtual HRESULT STDMETHODCALLTYPE ActivateInputProfile(const WCHAR*) = 0;
virtual HRESULT STDMETHODCALLTYPE SetUserSid(const WCHAR*) = 0;
};
#else
typedef interface IInputSwitchControlSV2 IInputSwitchControlSV2;
#endif
#ifdef __cplusplus
extern "C" {
#endif
HRESULT CInputSwitchControlProxy_CreateInstance(IInputSwitchControl* original, REFIID riid, void** ppvObject);
HRESULT CInputSwitchControlProxySV2_CreateInstance(IInputSwitchControlSV2* original, REFIID riid, void** ppvObject);
#ifdef __cplusplus
}
#endif

192
ExplorerPatcher/dllmain.c
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@ -205,6 +205,7 @@ BOOL g_bIsDesktopRaised = FALSE;
#include "symbols.h" #include "symbols.h"
#include "dxgi_imp.h" #include "dxgi_imp.h"
#include "ArchiveMenu.h" #include "ArchiveMenu.h"
#include "InputSwitch.h"
#include "StartupSound.h" #include "StartupSound.h"
#include "StartMenu.h" #include "StartMenu.h"
#include "TaskbarCenter.h" #include "TaskbarCenter.h"
@ -8807,197 +8808,32 @@ HRESULT ExplorerFrame_CoCreateInstanceHook(REFCLSID rclsid, LPUNKNOWN pUnkOuter,
#pragma region "Change language UI style + Enable old taskbar" #pragma region "Change language UI style + Enable old taskbar"
#ifdef _WIN64 #ifdef _WIN64
DEFINE_GUID(CLSID_InputSwitchControl,
0xB9BC2A50,
0x43C3, 0x41AA, 0xa0, 0x86,
0x5D, 0xB1, 0x4e, 0x18, 0x4b, 0xae
);
DEFINE_GUID(IID_IInputSwitchControl,
0xB9BC2A50,
0x43C3, 0x41AA, 0xa0, 0x82,
0x5D, 0xB1, 0x4e, 0x18, 0x4b, 0xae
);
#define LANGUAGEUI_STYLE_DESKTOP 0 // Windows 11 style
#define LANGUAGEUI_STYLE_TOUCHKEYBOARD 1 // Windows 10 style
#define LANGUAGEUI_STYLE_LOGONUI 2
#define LANGUAGEUI_STYLE_UAC 3
#define LANGUAGEUI_STYLE_SETTINGSPANE 4
#define LANGUAGEUI_STYLE_OOBE 5
#define LANGUAGEUI_STYLE_OTHER 100
// char mov_edx_val[6] = { 0xBA, 0x00, 0x00, 0x00, 0x00, 0xC3 };
// char* ep_pf = NULL;
typedef interface IInputSwitchControl IInputSwitchControl;
typedef struct IInputSwitchControlVtbl
{
BEGIN_INTERFACE
HRESULT(STDMETHODCALLTYPE* QueryInterface)(
IInputSwitchControl* This,
/* [in] */ REFIID riid,
/* [annotation][iid_is][out] */
_COM_Outptr_ void** ppvObject);
ULONG(STDMETHODCALLTYPE* AddRef)(
IInputSwitchControl* This);
ULONG(STDMETHODCALLTYPE* Release)(
IInputSwitchControl* This);
HRESULT(STDMETHODCALLTYPE* Init)(
IInputSwitchControl* This,
/* [in] */ unsigned int clientType);
HRESULT(STDMETHODCALLTYPE* SetCallback)(
IInputSwitchControl* This,
/* [in] */ void* pInputSwitchCallback);
HRESULT(STDMETHODCALLTYPE* ShowInputSwitch)(
IInputSwitchControl* This,
/* [in] */ RECT* lpRect);
HRESULT(STDMETHODCALLTYPE* GetProfileCount)(
IInputSwitchControl* This,
/* [in] */ unsigned int* pOutNumberOfProfiles,
/* [in] */ int* a3);
// ...
END_INTERFACE
} IInputSwitchControlVtbl;
interface IInputSwitchControl
{
CONST_VTBL struct IInputSwitchControlVtbl* lpVtbl;
};
IInputSwitchControl* g_pDesktopInputSwitchControl;
HRESULT(*CInputSwitchControl_InitFunc)(IInputSwitchControl*, unsigned int);
HRESULT CInputSwitchControl_InitHook(IInputSwitchControl* _this, unsigned int dwOriginalIMEStyle)
{
// Note: Other than in explorer.exe!CTrayInputIndicator::_RegisterInputSwitch, we're also called by
// explorer.exe!HostAppEnvironment::_SetupInputSwitchServer which passes ISCT_IDL_USEROOBE (6) as the style.
if (dwOriginalIMEStyle == 0) // ISCT_IDL_DESKTOP
{
g_pDesktopInputSwitchControl = _this;
}
return CInputSwitchControl_InitFunc(_this, dwOriginalIMEStyle == 0 && dwIMEStyle ? dwIMEStyle : dwOriginalIMEStyle);
}
HRESULT (*CInputSwitchControl_ShowInputSwitchFunc)(IInputSwitchControl*, RECT*);
HRESULT CInputSwitchControl_ShowInputSwitchHook(IInputSwitchControl* _this, RECT* lpRect)
{
if (_this != g_pDesktopInputSwitchControl || !dwIMEStyle) // impossible case (this is not called for the Windows 11 language switcher), but just in case
{
return CInputSwitchControl_ShowInputSwitchFunc(_this, lpRect);
}
unsigned int dwNumberOfProfiles = 0;
int a3 = 0;
_this->lpVtbl->GetProfileCount(_this, &dwNumberOfProfiles, &a3);
HWND hWndTaskbar = FindWindowW(L"Shell_TrayWnd", NULL);
UINT dpiX = 96, dpiY = 96;
HRESULT hr = GetDpiForMonitor(
MonitorFromWindow(hWndTaskbar, MONITOR_DEFAULTTOPRIMARY),
MDT_DEFAULT,
&dpiX,
&dpiY
);
double dpix = dpiX / 96.0;
double dpiy = dpiY / 96.0;
//printf("RECT %d %d %d %d - %d %d\n", lpRect->left, lpRect->right, lpRect->top, lpRect->bottom, dwNumberOfProfiles, a3);
RECT rc;
GetWindowRect(hWndTaskbar, &rc);
POINT pt;
pt.x = rc.left;
pt.y = rc.top;
UINT tbPos = GetTaskbarLocationAndSize(pt, &rc);
if (tbPos == TB_POS_BOTTOM)
{
}
else if (tbPos == TB_POS_TOP)
{
if (dwIMEStyle == 1) // Windows 10 (with Language preferences link)
{
lpRect->top = rc.top + (rc.bottom - rc.top) + (UINT)(((double)dwNumberOfProfiles * (60.0 * dpiy)) + (5.0 * dpiy * 4.0) + (dpiy) + (48.0 * dpiy));
}
else if (dwIMEStyle == 2 || dwIMEStyle == 3 || dwIMEStyle == 4 || dwIMEStyle == 5) // LOGONUI, UAC, Windows 10, OOBE
{
lpRect->top = rc.top + (rc.bottom - rc.top) + (UINT)(((double)dwNumberOfProfiles * (60.0 * dpiy)) + (5.0 * dpiy * 2.0));
}
}
else if (tbPos == TB_POS_LEFT)
{
if (dwIMEStyle == 1 || dwIMEStyle == 2 || dwIMEStyle == 3 || dwIMEStyle == 4 || dwIMEStyle == 5)
{
lpRect->right = rc.left + (rc.right - rc.left) + (UINT)((double)(300.0 * dpix));
lpRect->top += (lpRect->bottom - lpRect->top);
}
}
if (tbPos == TB_POS_RIGHT)
{
if (dwIMEStyle == 1 || dwIMEStyle == 2 || dwIMEStyle == 3 || dwIMEStyle == 4 || dwIMEStyle == 5)
{
lpRect->right = lpRect->right - (rc.right - rc.left);
lpRect->top += (lpRect->bottom - lpRect->top);
}
}
if (dwIMEStyle == 4)
{
lpRect->right -= (UINT)((double)(300.0 * dpix)) - (lpRect->right - lpRect->left);
}
return CInputSwitchControl_ShowInputSwitchFunc(_this, lpRect);
}
DEFINE_GUID(CLSID_TrayUIComponent, DEFINE_GUID(CLSID_TrayUIComponent,
0x88FC85D3, 0x88FC85D3,
0x7090, 0x4F53, 0x8F, 0x7A, 0x7090, 0x4F53, 0x8F, 0x7A,
0xEB, 0x02, 0x68, 0x16, 0x27, 0x88 0xEB, 0x02, 0x68, 0x16, 0x27, 0x88
); );
HRESULT explorer_CoCreateInstanceHook( HRESULT EPTrayUIComponent_CreateInstance(REFIID riid, void** ppvObject);
REFCLSID rclsid,
LPUNKNOWN pUnkOuter, __declspec(dllexport) HRESULT explorer_CoCreateInstanceHook(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID riid, void** ppv)
DWORD dwClsContext,
REFIID riid,
IUnknown** ppv
)
{ {
if (IsEqualCLSID(rclsid, &CLSID_InputSwitchControl) && IsEqualIID(riid, &IID_IInputSwitchControl)) if (IsEqualCLSID(rclsid, &CLSID_InputSwitchControl) && IsEqualIID(riid, &IID_IInputSwitchControl))
{ {
HRESULT hr = CoCreateInstance(rclsid, pUnkOuter, dwClsContext, riid, ppv); HRESULT hr = CoCreateInstance(rclsid, pUnkOuter, dwClsContext, riid, ppv);
if (SUCCEEDED(hr) && bOldTaskbar && dwIMEStyle) if (SUCCEEDED(hr) && bOldTaskbar && dwIMEStyle)
{ {
// The commented method below is no longer required as I have now came to patching // The commented method below is no longer required as I have now came to creating a wrapper class.
// the interface's vtable. // Also, make sure to read the explanation below as well, it's useful for understanding how this worked.
// Also, make sure to read the explanation below as well, it's useful for understanding // Note: Other than in explorer.exe!CTrayInputIndicator::_RegisterInputSwitch, we're also called by
// how this worked. // explorer.exe!HostAppEnvironment::_SetupInputSwitchServer which passes ISCT_IDL_USEROOBE (6) as the style.
IInputSwitchControl* pInputSwitchControl = *ppv; if (IsWindows11Version22H2OrHigher())
DWORD flOldProtect = 0;
if (VirtualProtect(pInputSwitchControl->lpVtbl, sizeof(IInputSwitchControlVtbl), PAGE_EXECUTE_READWRITE, &flOldProtect))
{ {
if (pInputSwitchControl->lpVtbl->ShowInputSwitch != CInputSwitchControl_ShowInputSwitchHook) hr = CInputSwitchControlProxySV2_CreateInstance(*ppv, riid, ppv);
{ }
CInputSwitchControl_ShowInputSwitchFunc = pInputSwitchControl->lpVtbl->ShowInputSwitch; else
pInputSwitchControl->lpVtbl->ShowInputSwitch = CInputSwitchControl_ShowInputSwitchHook; {
} hr = CInputSwitchControlProxy_CreateInstance(*ppv, riid, ppv);
if (pInputSwitchControl->lpVtbl->Init != CInputSwitchControl_InitHook)
{
CInputSwitchControl_InitFunc = pInputSwitchControl->lpVtbl->Init;
pInputSwitchControl->lpVtbl->Init = CInputSwitchControl_InitHook;
}
VirtualProtect(pInputSwitchControl->lpVtbl, sizeof(IInputSwitchControlVtbl), flOldProtect, &flOldProtect);
} }
// Pff... how this works: // Pff... how this works:
// //

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