Feature/enhancements

.github/workflows/build.yml

@@ -2,7 +2,7 @@ name: Build GPU-Switcher
 
 on:
   push:
-    branches: [ "main" ]
+    branches: [ "main", "feature/**" ]
   pull_request:
     branches: [ "main" ]
   workflow_dispatch:

.github/workflows/release.yml

@@ -0,0 +1,46 @@
+name: Release GPU-Switcher
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  release-windows:
+    runs-on: windows-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4.2.2
+
+      - name: Set up MSVC
+        uses: ilammy/msvc-dev-cmd@v1.13.0
+        with:
+          arch: x64
+
+      - name: Configure CMake
+        run: cmake -B build -G "Ninja" -DCMAKE_BUILD_TYPE=Release
+
+      - name: Build
+        run: cmake --build build --config Release
+
+      - name: Package Release
+        shell: pwsh
+        run: |
+          $tag = "${{ github.ref_name }}"
+          $zipName = "GPU-Switcher-${tag}-windows-x64.zip"
+          Compress-Archive -Path "build/GPU-Switcher.exe", "README.md", "LICENSE" -DestinationPath $zipName
+          $hash = (Get-FileHash -Algorithm SHA256 $zipName).Hash
+          "$hash  $zipName" | Out-File -Encoding ascii -FilePath "${zipName}.sha256"
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            GPU-Switcher-*-windows-x64.zip
+            GPU-Switcher-*-windows-x64.zip.sha256
+          draft: false
+          prerelease: false
+          generate_release_notes: true

README.md

@@ -60,6 +60,16 @@ After this, GPU‑Switcher will consistently trigger a dGPU display switch on la
 
 ---
 
+## Command‑line options
+
+| Option | Description |
+|---|---|
+| *(none)* | Launches the tray utility. If an instance is already running, highlights the active instance in the tray. |
+| `--exit` / `--quit` | Gracefully closes the running GPU-Switcher instance. |
+| `--help` / `-h` | Shows usage instructions and available flags. |
+
+---
+
 ## How it works
 
 On startup, GPU‑Switcher:

src/main.cpp

@@ -22,6 +22,7 @@ extern "C" {
 
 #define WM_TRAY                 (WM_USER + 1)
 #define WM_RESET_DONE           (WM_USER + 2)
+#define WM_ACTIVATE_INSTANCE    (WM_USER + 3)
 #define TRAY_ID                 1
 #define ID_START_WINDOWS        1001
 #define ID_RESET_DISPLAYS       1002
@@ -129,7 +130,7 @@ static bool AcquireDGpu()
 
     HRESULT hr = D3D11CreateDevice(
         bestAdapter.Get(), D3D_DRIVER_TYPE_UNKNOWN,
-        nullptr, 0,
+        nullptr, D3D11_CREATE_DEVICE_BGRA_SUPPORT,
         featureLevels, static_cast<UINT>(ARRAYSIZE(featureLevels)),
         D3D11_SDK_VERSION,
         g_device.GetAddressOf(), &level, g_context.GetAddressOf());
@@ -454,6 +455,33 @@ LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
         }
         return 0;
 
+    case WM_ACTIVATE_INSTANCE:
+    {
+        UpdateTrayStatus();
+        NOTIFYICONDATAW balloon = g_nid;
+        balloon.uFlags      |= NIF_INFO;
+        balloon.dwInfoFlags  = (g_dGpuActive ? NIIF_INFO : NIIF_WARNING) | NIIF_NOSOUND;
+        wcsncpy_s(balloon.szInfoTitle, L"GPU-Switcher", _TRUNCATE);
+        if (g_resetInProgress)
+        {
+            wcsncpy_s(balloon.szInfo, L"Already running (display reset in progress)", _TRUNCATE);
+        }
+        else if (g_dGpuActive)
+        {
+            swprintf_s(balloon.szInfo, L"Already active in system tray.\nGPU: %s", g_activeGpuName.c_str());
+        }
+        else
+        {
+            wcsncpy_s(balloon.szInfo, L"Already running (dGPU inactive)", _TRUNCATE);
+        }
+        Shell_NotifyIconW(NIM_MODIFY, &balloon);
+        return 0;
+    }
+
+    case WM_CLOSE:
+        PostQuitMessage(0);
+        return 0;
+
     case WM_DESTROY:
         KillTimer(hwnd, TIMER_RESUME_REACQUIRE);
         KillTimer(hwnd, TIMER_HEALTH_CHECK);
@@ -477,18 +505,56 @@ static int RunElevatedReset()
 // Removing the parameter name silences MSVC warning C4100.
 int WINAPI WinMain(HINSTANCE hInst, HINSTANCE, LPSTR, int)
 {
-    // Check for elevated reset mode first
+    // Check command line arguments first
     int argc = 0;
     LPWSTR* argv = CommandLineToArgvW(GetCommandLineW(), &argc);
     bool resetMode = false;
+    bool exitMode  = false;
+    bool helpMode  = false;
+
     if (argv)
     {
         for (int i = 1; i < argc; ++i)
+        {
             if (_wcsicmp(argv[i], L"--reset-gpu") == 0)
                 resetMode = true;
+            else if (_wcsicmp(argv[i], L"--exit") == 0 || _wcsicmp(argv[i], L"--quit") == 0)
+                exitMode = true;
+            else if (_wcsicmp(argv[i], L"--help") == 0 || _wcsicmp(argv[i], L"-h") == 0 || _wcsicmp(argv[i], L"/?") == 0)
+                helpMode = true;
+        }
         LocalFree(argv);
     }
 
+    if (helpMode)
+    {
+        MessageBoxW(nullptr,
+            L"GPU-Switcher v" APP_VERSION L"\n\n"
+            L"Usage:\n"
+            L"  GPU-Switcher.exe          Start tray application\n"
+            L"  GPU-Switcher.exe --exit   Gracefully close running instance\n"
+            L"  GPU-Switcher.exe --help   Show this help dialog\n\n"
+            L"Helper Flags:\n"
+            L"  --reset-gpu               Cycle display adapters (elevated helper)",
+            L"GPU-Switcher", MB_OK | MB_ICONINFORMATION);
+        return 0;
+    }
+
+    if (exitMode)
+    {
+        HWND hExisting = FindWindowW(L"TrayHookClass", L"GPU-Switcher");
+        if (hExisting)
+        {
+            PostMessageW(hExisting, WM_CLOSE, 0, 0);
+            LogInfo(L"Sent exit request to running GPU-Switcher instance");
+        }
+        else
+        {
+            LogInfo(L"No running GPU-Switcher instance found to exit");
+        }
+        return 0;
+    }
+
     if (resetMode)
         return RunElevatedReset();
 
@@ -504,7 +570,12 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE, LPSTR, int)
 
     if (GetLastError() == ERROR_ALREADY_EXISTS)
     {
-        LogInfo(L"Another instance is already running");
+        LogInfo(L"Another instance is already running — notifying running instance");
+        HWND hExisting = FindWindowW(L"TrayHookClass", L"GPU-Switcher");
+        if (hExisting)
+        {
+            PostMessageW(hExisting, WM_ACTIVATE_INSTANCE, 0, 0);
+        }
         CloseHandle(g_hMutex);
         g_hMutex = nullptr;
         return 0;

src/resource.rc

@@ -1,3 +1,4 @@
+#include <winres.h>
 #include "resource.h"
 
 IDI_APP_ICON     ICON "icons/ico/main-rainbow.ico"
@@ -7,3 +8,36 @@ IDI_ICON_NVIDIA  ICON "icons/ico/nvidia-green.ico"
 IDI_ICON_AMD     ICON "icons/ico/amd-red.ico"
 IDI_ICON_UNKNOWN ICON "icons/ico/unknown-grey.ico"
 IDI_ICON_WARNING ICON "icons/ico/warning-yellow.ico"
+
+VS_VERSION_INFO VERSIONINFO
+FILEVERSION     1,1,0,0
+PRODUCTVERSION  1,1,0,0
+FILEFLAGSMASK   VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+FILEFLAGS       VS_FF_DEBUG
+#else
+FILEFLAGS       0x0L
+#endif
+FILEOS          VOS_NT_WINDOWS32
+FILETYPE        VFT_APP
+FILESUBTYPE     VFT2_UNKNOWN
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904b0"
+        BEGIN
+            VALUE "CompanyName",      "Tiflit"
+            VALUE "FileDescription",  "GPU-Switcher - Discrete GPU Activator"
+            VALUE "FileVersion",      "1.1.0.0"
+            VALUE "InternalName",     "GPU-Switcher"
+            VALUE "LegalCopyright",   "Copyright (C) 2026"
+            VALUE "OriginalFilename", "GPU-Switcher.exe"
+            VALUE "ProductName",      "GPU-Switcher"
+            VALUE "ProductVersion",   "1.1.0.0"
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x0409, 1200
+    END
+END