Disable Snap To Default Button behavior in Windows (Go source)

windisablesnaptodefaultbutton.go

/*A command-line tool for setting the mouse speed on Windows machines.
This comes in handy when using different mouses (e.g. at work and at home)
that require different speed settings.

Dependencies: sys package (go get golang.org/x/sys/...)

License:

Copyright (c) 2015, Christoph Berger <[email protected]>

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors
   may be used to endorse or promote products derived from this software without
   specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package main

import (
	"fmt"

	"golang.org/x/sys/windows"
)

const (
	spiSetSnapNoDefButton uint64 = 0x60
	spifSendChange        uint64 = 2
)

func main() {
	user32 := windows.MustLoadDLL("user32.dll")
	spi := user32.MustFindProc("SystemParametersInfoA")
	ret, _, err := spi.Call(uintptr(spiSetSnapNoDefButton), uintptr(0), uintptr(0), uintptr(spifSendChange))
	// err is always non-nil - check the return value instead.
	if ret == 0 {
		panic("Error calling SystemParametersInfo: " + err.Error())
	}

	fmt.Println("Snap-To-Button behavior disabled.")
}

By default, Windows 7 has the Snap-To-Default-Button option enabled. Some love it, some find it annoying. This Go application switches the feature off. Handy if you frequently deploy prefedined OS images to test machines, and the image maintainer did not care to switch this function off.

To compile:

• Get the Go compiler
• Download the source file
• Compile:

go build windisablesnaptodefaultbutton.go