完善样式设计：樱花粉风格

src/source/Tetris.cpp

@@ -31,6 +31,19 @@ int APIENTRY _tWinMain(HINSTANCE hInstance,
     UNREFERENCED_PARAMETER(hPrevInstance);
     UNREFERENCED_PARAMETER(lpCmdLine);
 
+    HMODULE user32Module = GetModuleHandle(_T("user32.dll"));
+    if (user32Module != nullptr)
+    {
+        typedef BOOL(WINAPI* SetProcessDPIAwareFunc)();
+        SetProcessDPIAwareFunc setProcessDPIAware =
+            (SetProcessDPIAwareFunc)GetProcAddress(user32Module, "SetProcessDPIAware");
+
+        if (setProcessDPIAware != nullptr)
+        {
+            setProcessDPIAware();
+        }
+    }
+
     LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
     LoadString(hInstance, IDC_TETRIS, szWindowClass, MAX_LOADSTRING);
     lstrcpy(szTitle, _T("俄罗斯方块"));
@@ -97,7 +110,7 @@ ATOM MyRegisterClass(HINSTANCE hInstance)
  */
 BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
 {
-    RECT rect = { 0, 0, GRID * nWidth, GRID * nHeight };
+    RECT rect = { 0, 0, WINDOW_CLIENT_WIDTH, WINDOW_CLIENT_HEIGHT };
     AdjustWindowRect(&rect, WS_OVERLAPPEDWINDOW, TRUE);
 
     hInst = hInstance;
@@ -146,7 +159,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
         srand((unsigned int)time(nullptr));
         Restart();
         SetTimer(hWnd, GAME_TIMER_ID, GAME_TIMER_INTERVAL, nullptr);
-        InvalidateRect(hWnd, nullptr, TRUE);
+        InvalidateRect(hWnd, nullptr, FALSE);
         break;
     case WM_COMMAND:
     {
@@ -184,28 +197,28 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
                 ComputeTarget();
             }
 
-            InvalidateRect(hWnd, nullptr, TRUE);
+            InvalidateRect(hWnd, nullptr, FALSE);
         }
         break;
     case WM_KEYDOWN:
         if (wParam == 'R')
         {
             Restart();
-            InvalidateRect(hWnd, nullptr, TRUE);
+            InvalidateRect(hWnd, nullptr, FALSE);
             break;
         }
 
         if (wParam == 'P')
         {
             suspendFlag = !suspendFlag;
-            InvalidateRect(hWnd, nullptr, TRUE);
+            InvalidateRect(hWnd, nullptr, FALSE);
             break;
         }
 
         if (wParam == 'G')
         {
             targetFlag = !targetFlag;
-            InvalidateRect(hWnd, nullptr, TRUE);
+            InvalidateRect(hWnd, nullptr, FALSE);
             break;
         }
 
@@ -258,13 +271,37 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
             ComputeTarget();
         }
 
-        InvalidateRect(hWnd, nullptr, TRUE);
+        InvalidateRect(hWnd, nullptr, FALSE);
         break;
+    case WM_ERASEBKGND:
+        return 1;
     case WM_PAINT:
     {
         PAINTSTRUCT ps;
         HDC hdc = BeginPaint(hWnd, &ps);
-        TDrawScreen(hdc, hWnd);
+        RECT clientRect;
+        GetClientRect(hWnd, &clientRect);
+
+        HDC memDC = CreateCompatibleDC(hdc);
+        HBITMAP memBitmap = CreateCompatibleBitmap(
+            hdc,
+            clientRect.right - clientRect.left,
+            clientRect.bottom - clientRect.top);
+        HBITMAP oldBitmap = (HBITMAP)SelectObject(memDC, memBitmap);
+
+        TDrawScreen(memDC, hWnd);
+        BitBlt(
+            hdc,
+            0, 0,
+            clientRect.right - clientRect.left,
+            clientRect.bottom - clientRect.top,
+            memDC,
+            0, 0,
+            SRCCOPY);
+
+        SelectObject(memDC, oldBitmap);
+        DeleteObject(memBitmap);
+        DeleteDC(memDC);
         EndPaint(hWnd, &ps);
     }
     break;