1 files changed, 185 insertions, 0 deletions
diff --git a/samples/DX_APIUsage/Splash.cpp b/samples/DX_APIUsage/Splash.cpp
new file mode 100644
index 0000000..f5aa853
--- /dev/null
+++ b/samples/DX_APIUsage/Splash.cpp
@@ -0,0 +1,185 @@
+#include "splash.h"
+
+const wchar_t SplashClassName[] = L"SplashWindowClass";
+
+static HBITMAP g_hSplashBMP = nullptr;
+static HDC g_hSplashDC = nullptr;
+static HDC g_hMemoryDC = nullptr;
+static LONG g_BitmapWidth = 628;
+static LONG g_BitmapHeight = 888;
+static HWND g_hSplashWnd = nullptr;
+static UINT_PTR g_TimerId = 0;
+static int g_iExitApplication = 0;
+
+#define DEMO_SPLASH_TIME 5000
+
+LRESULT CALLBACK SplashWndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
+{
+    switch (Msg)
+    {
+    case WM_CLOSE:
+        g_iExitApplication = 1;
+        KillTimer(g_hSplashWnd, g_TimerId);
+        PostQuitMessage(0);
+        return 0;
+
+    case WM_TIMER:
+        g_iExitApplication = 0;
+        KillTimer(g_hSplashWnd, g_TimerId);
+        PostQuitMessage(0);
+        return 0;
+
+    case WM_ERASEBKGND:
+        BitBlt(reinterpret_cast<HDC>(wParam), 0, 0, g_BitmapWidth, g_BitmapHeight, g_hMemoryDC, 0, 0, SRCCOPY);
+        break;
+
+    default:
+        return (DefWindowProc(hWnd, Msg, wParam, lParam));
+    }
+
+    return 0;
+}
+
+int ShowSplash(HINSTANCE hInstance, UINT_PTR TimerId, int BitmapId)
+{
+    g_TimerId = TimerId;
+    if (TimerId == 0)
+    {
+        return 0;
+    }
+
+    if (BitmapId == 0)
+    {
+        return 0;
+    }
+
+    g_hSplashBMP = LoadBitmap(hInstance, MAKEINTRESOURCE(BitmapId));
+    if (!g_hSplashBMP)
+    {
+        return 0;
+    }
+
+    BITMAP Bitmap;
+    if (GetObject(g_hSplashBMP, sizeof(BITMAP), &Bitmap))
+    {
+        g_BitmapWidth = Bitmap.bmWidth;
+        g_BitmapHeight = Bitmap.bmHeight;
+    }
+
+    int X = 0;
+    int Y = 0;
+    RECT DesktopRect;
+    if (GetWindowRect(GetDesktopWindow(), &DesktopRect))
+    {
+        X = (DesktopRect.right - g_BitmapWidth) / 2;
+        Y = (DesktopRect.bottom - g_BitmapHeight) / 2;
+    }
+
+    WNDCLASSEX splashwc;
+    splashwc.cbSize = sizeof(WNDCLASSEX);
+    splashwc.style = 0;
+    splashwc.lpfnWndProc = SplashWndProc;
+    splashwc.cbClsExtra = 0;
+    splashwc.cbWndExtra = 0;
+    splashwc.hInstance = hInstance;
+    splashwc.hIcon = NULL;
+    splashwc.hIconSm = NULL;
+    splashwc.hCursor = LoadCursor(NULL, IDC_ARROW);
+    splashwc.hbrBackground = NULL;
+    splashwc.lpszMenuName = NULL;
+    splashwc.lpszClassName = SplashClassName;
+    if (!RegisterClassEx(&splashwc))
+    {
+        return 0;
+    }
+
+    g_hSplashWnd = CreateWindowEx(
+        0,
+        SplashClassName,
+        L"Splash Screen",
+        WS_POPUP,
+        X,
+        Y,
+        Bitmap.bmWidth,
+        Bitmap.bmHeight,
+        NULL,
+        NULL,
+        hInstance,
+        NULL);
+
+    if (!g_hSplashWnd)
+    {
+        return 0;
+    }
+
+    g_hSplashDC = GetDC(g_hSplashWnd);
+    if (!g_hSplashDC)
+    {
+        return 0;
+    }
+
+    g_hMemoryDC = CreateCompatibleDC(g_hSplashDC);
+    if (!g_hMemoryDC)
+    {
+        return 0;
+    }
+
+    HGDIOBJ hGdiObj;
+    hGdiObj = SelectObject(g_hMemoryDC, g_hSplashBMP);
+    if (hGdiObj == NULL)
+    {
+        return 0;
+    }
+
+    ShowWindow(g_hSplashWnd, SW_SHOW);
+    if (!UpdateWindow(g_hSplashWnd))
+    {
+        return 0;
+    }
+
+    if (!SetTimer(g_hSplashWnd, g_TimerId, DEMO_SPLASH_TIME, NULL))
+    {
+        return 0;
+    }
+
+    MSG msg;
+
+    while (GetMessage(&msg, NULL, 0, 0))
+    {
+        TranslateMessage(&msg);
+        DispatchMessage(&msg);
+    }
+
+    return g_iExitApplication;
+}
+
+int HideSplash()
+{
+    if (g_hSplashWnd)
+    {
+        KillTimer(g_hSplashWnd, g_TimerId);
+
+        if (g_hSplashDC)
+        {
+            ReleaseDC(g_hSplashWnd, g_hSplashDC);
+            g_hSplashDC = nullptr;
+        }
+
+        if (g_hMemoryDC)
+        {
+            ReleaseDC(g_hSplashWnd, g_hMemoryDC);
+            g_hMemoryDC = nullptr;
+        }
+
+        DestroyWindow(g_hSplashWnd);
+        g_hSplashWnd = nullptr;
+    }
+
+    if (g_hSplashBMP)
+    {
+        DeleteObject(g_hSplashBMP);
+        g_hSplashBMP = nullptr;
+    }
+
+    return 0;
+}
+\ No newline at end of file