diff --git a/src/gx/CGxDevice.cpp b/src/gx/CGxDevice.cpp
index a2c5cb2..fb171d2 100644
--- a/src/gx/CGxDevice.cpp
+++ b/src/gx/CGxDevice.cpp
@@ -78,6 +78,10 @@ void CGxDevice::Log(const char* format, ...) {
     // TODO
 }
 
+void CGxDevice::Log(const CGxFormat& format) {
+    // TODO
+}
+
 #if defined(WHOA_SYSTEM_WIN)
 CGxDevice* CGxDevice::NewD3d() {
     auto m = SMemAlloc(sizeof(CGxDeviceD3d), __FILE__, __LINE__, 0x0);
diff --git a/src/gx/CGxDevice.hpp b/src/gx/CGxDevice.hpp
index e810c64..57d77d4 100644
--- a/src/gx/CGxDevice.hpp
+++ b/src/gx/CGxDevice.hpp
@@ -47,6 +47,7 @@ class CGxDevice {
 
         // Static functions
         static void Log(const char* format, ...);
+        static void Log(const CGxFormat& format);
 #if defined(WHOA_SYSTEM_WIN)
         static CGxDevice* NewD3d();
         static CGxDevice* NewD3d9Ex();
diff --git a/src/gx/CGxFormat.hpp b/src/gx/CGxFormat.hpp
index 7aeea3a..2fdf2f9 100644
--- a/src/gx/CGxFormat.hpp
+++ b/src/gx/CGxFormat.hpp
@@ -27,6 +27,7 @@ class CGxFormat {
         uint32_t sampleCount;
         Format colorFormat;
         uint32_t refreshRate;
+        C2iVector pos;
 };
 
 #endif
diff --git a/src/gx/d3d/CGxDeviceD3d.cpp b/src/gx/d3d/CGxDeviceD3d.cpp
index a5ebd5b..2379447 100644
--- a/src/gx/d3d/CGxDeviceD3d.cpp
+++ b/src/gx/d3d/CGxDeviceD3d.cpp
@@ -9,7 +9,7 @@ ATOM WindowClassCreate() {
     wc.style = CS_OWNDC;
     wc.lpfnWndProc = CGxDeviceD3d::WindowProcD3d;
     wc.hInstance = instance;
-    wc.lpszClassName = "GxWindowClassD3d";
+    wc.lpszClassName = TEXT("GxWindowClassD3d");
 
     wc.hIcon = static_cast<HICON>(LoadImage(instance, TEXT("BlizzardIcon.ico"), 1u, 0, 0, 0x40));
     wc.hCursor = LoadCursor(instance, TEXT("BlizzardCursor.cur"));
@@ -62,7 +62,8 @@ void CGxDeviceD3d::IUnloadD3dLib(HINSTANCE& d3dLib, LPDIRECT3D9& d3d) {
 
 LRESULT CGxDeviceD3d::WindowProcD3d(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
     // TODO
-    return 0;
+
+    return DefWindowProc(hWnd, uMsg, wParam, lParam);
 }
 
 void CGxDeviceD3d::CapsWindowSize(CRect& dst) {
@@ -96,6 +97,41 @@ int32_t CGxDeviceD3d::DeviceCreate(long (*windowProc)(void*, uint32_t, uint32_t,
     return 0;
 }
 
+int32_t CGxDeviceD3d::DeviceSetFormat(const CGxFormat& format) {
+    CGxDevice::Log("CGxDeviceD3d::DeviceSetFormat():");
+    CGxDevice::Log(format);
+
+    if (this->m_hwnd) {
+        ShowWindow(this->m_hwnd, 0);
+    }
+
+    // TODO
+
+    if (this->m_hwnd) {
+        DestroyWindow(this->m_hwnd);
+    }
+
+    this->m_hwnd = nullptr;
+
+    this->m_format = format;
+
+    CGxFormat createFormat = format;
+
+    if (this->ICreateWindow(createFormat) && this->ICreateD3dDevice(createFormat) && this->CGxDevice::DeviceSetFormat(format)) {
+        this->m_context = 1;
+
+        // TODO
+
+        if (this->m_format.window == 0) {
+            RECT windowRect;
+            GetWindowRect(this->m_hwnd, &windowRect);
+            ClipCursor(&windowRect);
+        }
+
+        return 1;
+    }
+}
+
 int32_t CGxDeviceD3d::ICreateD3d() {
     if (CGxDeviceD3d::ILoadD3dLib(this->m_d3dLib, this->m_d3d) && this->m_d3d->GetDeviceCaps(0, D3DDEVTYPE_HAL, &this->m_d3dCaps) >= S_OK) {
         if (this->m_desktopDisplayMode.Format != D3DFMT_UNKNOWN) {
@@ -118,6 +154,56 @@ int32_t CGxDeviceD3d::ICreateD3d() {
     return 0;
 }
 
+int32_t CGxDeviceD3d::ICreateD3dDevice(const CGxFormat& format) {
+    // TODO
+    return 0;
+}
+
+bool CGxDeviceD3d::ICreateWindow(CGxFormat& format) {
+    auto instance = GetModuleHandle(nullptr);
+
+    DWORD dwStyle;
+    if (format.window == 0) {
+        dwStyle = WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_SYSMENU;
+    } else if (format.maximize == 1) {
+        dwStyle = WS_POPUP | WS_VISIBLE;
+    } else if (format.maximize == 2) {
+        dwStyle = WS_POPUP;
+    } else {
+        dwStyle = WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_CAPTION | WS_SYSMENU | WS_SIZEBOX | WS_MINIMIZEBOX | WS_MAXIMIZEBOX;
+    }
+
+    // TODO
+
+    int32_t width = format.size.x ? format.size.x : CW_USEDEFAULT;
+    int32_t height = format.size.y ? format.size.y : CW_USEDEFAULT;
+
+    if (format.window && format.maximize != 1 && format.size.x && format.size.y) {
+        // TODO adjust width and height
+    }
+
+    this->m_hwnd = CreateWindowEx(
+        WS_EX_APPWINDOW,
+        TEXT("GxWindowClassD3d"),
+        TEXT("World of Warcraft"),
+        dwStyle,
+        format.pos.x,
+        format.pos.y,
+        width,
+        height,
+        nullptr,
+        nullptr,
+        instance,
+        this
+    );
+
+    if (this->m_hwnd && format.maximize != 2) {
+        ShowWindow(this->m_hwnd, 1);
+    }
+
+    return this->m_hwnd != nullptr;
+}
+
 void CGxDeviceD3d::IDestroyD3d() {
     this->IDestroyD3dDevice();
     CGxDeviceD3d::IUnloadD3dLib(this->m_d3dLib, this->m_d3d);
diff --git a/src/gx/d3d/CGxDeviceD3d.hpp b/src/gx/d3d/CGxDeviceD3d.hpp
index c234990..7c5dca2 100644
--- a/src/gx/d3d/CGxDeviceD3d.hpp
+++ b/src/gx/d3d/CGxDeviceD3d.hpp
@@ -14,6 +14,7 @@ class CGxDeviceD3d : public CGxDevice {
     static LRESULT WindowProcD3d(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
 
     // Member variables
+    HWND m_hwnd;
     ATOM m_hwndClass;
     int32_t m_ownhwnd;
     HINSTANCE m_d3dLib;
@@ -26,6 +27,7 @@ class CGxDeviceD3d : public CGxDevice {
     virtual void ITexMarkAsUpdated(CGxTex* texId);
     virtual void IRsSendToHw(EGxRenderState rs);
     virtual int32_t DeviceCreate(long (*windowProc)(void*, uint32_t, uint32_t, long), const CGxFormat& format);
+    virtual int32_t DeviceSetFormat(const CGxFormat& format);
     virtual void CapsWindowSize(CRect& dst);
     virtual void CapsWindowSizeInScreenCoords(CRect& dst);
     virtual void PoolSizeSet(CGxPool* pool, uint32_t size);
@@ -34,6 +36,8 @@ class CGxDeviceD3d : public CGxDevice {
 
     // Member functions
     int32_t ICreateD3d();
+    int32_t ICreateD3dDevice(const CGxFormat& format);
+    bool ICreateWindow(CGxFormat& format);
     void IDestroyD3d();
     void IDestroyD3dDevice();
 };