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Add GLFW_TRANSPARENT attribute and documentation
This completes support for window framebuffer transparency on Windows, macOS and X11. Note that the hint/attribute may be renamed before release to clarify its relationship to GLFW_OPACITY. Fixes #197. Closes #1079. Related to #663. Related to #715. Related to #723. Related to #1078.
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@@ -62,6 +62,17 @@ BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
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#endif // _GLFW_BUILD_DLL
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// HACK: Define versionhelpers.h functions manually as MinGW lacks the header
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BOOL IsWindowsVersionOrGreater(WORD major, WORD minor, WORD sp)
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{
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OSVERSIONINFOEXW osvi = { sizeof(osvi), major, minor, 0, 0, {0}, sp };
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DWORD mask = VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR;
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ULONGLONG cond = VerSetConditionMask(0, VER_MAJORVERSION, VER_GREATER_EQUAL);
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cond = VerSetConditionMask(cond, VER_MINORVERSION, VER_GREATER_EQUAL);
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cond = VerSetConditionMask(cond, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
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return VerifyVersionInfoW(&osvi, mask, cond);
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}
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// Load necessary libraries (DLLs)
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//
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static GLFWbool loadLibraries(void)
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@@ -131,7 +142,7 @@ static GLFWbool loadLibraries(void)
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GetProcAddress(_glfw.win32.dwmapi.instance, "DwmIsCompositionEnabled");
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_glfw.win32.dwmapi.Flush = (PFN_DwmFlush)
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GetProcAddress(_glfw.win32.dwmapi.instance, "DwmFlush");
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_glfw.win32.dwmapi.DwmEnableBlurBehindWindow = (DWMENABLEBLURBEHINDWINDOW_T)
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_glfw.win32.dwmapi.EnableBlurBehindWindow = (PFN_DwmEnableBlurBehindWindow)
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GetProcAddress(_glfw.win32.dwmapi.instance, "DwmEnableBlurBehindWindow");
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}
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