diff --git a/backends/imgui_impl_win32.cpp b/backends/imgui_impl_win32.cpp index 31358c845ffb..2574fcd75134 100644 --- a/backends/imgui_impl_win32.cpp +++ b/backends/imgui_impl_win32.cpp @@ -899,7 +899,47 @@ float ImGui_ImplWin32_GetDpiScaleForHwnd(void* hwnd) return ImGui_ImplWin32_GetDpiScaleForMonitor(monitor); } +//--------------------------------------------------------------------------------------------------------- +// Transparency related helpers (optional) //-------------------------------------------------------------------------------------------------------- + +#if defined(_MSC_VER) +#pragma comment(lib, "dwmapi") // Link with dwmapi.lib. MinGW will require linking with '-ldwmapi' +#endif + +// [experimental] +// Borrowed from GLFW's function updateFramebufferTransparency() in src/win32_window.c +// (the Dwm* functions are Vista era functions but we are borrowing logic from GLFW) +void ImGui_ImplWin32_EnableAlphaCompositing(void* hwnd) +{ + if (!_IsWindowsVistaOrGreater()) + return; + + BOOL composition; + if (FAILED(::DwmIsCompositionEnabled(&composition)) || !composition) + return; + + BOOL opaque; + DWORD color; + if (_IsWindows8OrGreater() || (SUCCEEDED(::DwmGetColorizationColor(&color, &opaque)) && !opaque)) + { + HRGN region = ::CreateRectRgn(0, 0, -1, -1); + DWM_BLURBEHIND bb = {}; + bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION; + bb.hRgnBlur = region; + bb.fEnable = TRUE; + ::DwmEnableBlurBehindWindow((HWND)hwnd, &bb); + ::DeleteObject(region); + } + else + { + DWM_BLURBEHIND bb = {}; + bb.dwFlags = DWM_BB_ENABLE; + ::DwmEnableBlurBehindWindow((HWND)hwnd, &bb); + } +} + +//--------------------------------------------------------------------------------------------------------- // MULTI-VIEWPORT / PLATFORM INTERFACE SUPPORT // This is an _advanced_ and _optional_ feature, allowing the backend to create and handle multiple viewports simultaneously. // If you are new to dear imgui or creating a new binding for dear imgui, it is recommended that you completely ignore this section first.. @@ -1220,43 +1260,3 @@ static void ImGui_ImplWin32_ShutdownPlatformInterface() } //--------------------------------------------------------------------------------------------------------- -// Transparency related helpers (optional) -//-------------------------------------------------------------------------------------------------------- - -#if defined(_MSC_VER) -#pragma comment(lib, "dwmapi") // Link with dwmapi.lib. MinGW will require linking with '-ldwmapi' -#endif - -// [experimental] -// Borrowed from GLFW's function updateFramebufferTransparency() in src/win32_window.c -// (the Dwm* functions are Vista era functions but we are borrowing logic from GLFW) -void ImGui_ImplWin32_EnableAlphaCompositing(void* hwnd) -{ - if (!_IsWindowsVistaOrGreater()) - return; - - BOOL composition; - if (FAILED(::DwmIsCompositionEnabled(&composition)) || !composition) - return; - - BOOL opaque; - DWORD color; - if (_IsWindows8OrGreater() || (SUCCEEDED(::DwmGetColorizationColor(&color, &opaque)) && !opaque)) - { - HRGN region = ::CreateRectRgn(0, 0, -1, -1); - DWM_BLURBEHIND bb = {}; - bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION; - bb.hRgnBlur = region; - bb.fEnable = TRUE; - ::DwmEnableBlurBehindWindow((HWND)hwnd, &bb); - ::DeleteObject(region); - } - else - { - DWM_BLURBEHIND bb = {}; - bb.dwFlags = DWM_BB_ENABLE; - ::DwmEnableBlurBehindWindow((HWND)hwnd, &bb); - } -} - -//---------------------------------------------------------------------------------------------------------