GTK+ 3 Reference Manual: Using GTK+ on Windows

Using GTK+ on Windows

Using GTK+ on Windows — Windows-specific aspects of using GTK+

Using GTK+ on Windows

The Windows port of GTK+ is an implementation of GDK (and therefore GTK+) on top of the Win32 API. When compiling GTK+ on Windows, this backend is the default.

Windows-specific commandline options

The Windows GDK backend can be influenced with some additional command line arguments.

--sync. Don't batch GDI requests. This might be a marginally useful option for debugging.

--no-wintab, --ignore-wintab. Don't use the Wintab API for tablet support.

--use-wintab. Use the Wintab API for tablet support. This is the default.

--max-colors number. In 256 color mode, restrict the size of the color palette to the specified number of colors. This option is obsolete.

Windows-specific environment variables

The Win32 GDK backend can be influenced with some additional environment variables.

GDK_IGNORE_WINTAB. If this variable is set, GTK+ doesn't use the Wintab API for tablet support.

GDK_USE_WINTAB. If this variable is set, GTK+ uses the Wintab API for tablet support. This is the default.

GDK_WIN32_MAX_COLORS. Specifies the size of the color palette used in 256 color mode.

More information about GTK+ on Windows, including detailed build instructions, binary downloads, etc, can be found online.