Could not determine kind of name for C.DWORD and C.INPUT

Getting the following errors on building the project.
```
# github.com/AllenDang/w32
could not determine kind of name for C.DWORD
could not determine kind of name for C.INPUT
```
Any help is appreciated.
**Commands**
```
go get -u -d github.com\getgauge\gauge_screenshot
cd $GOPATH/github.com\getgauge\gauge_screenshot
go build
```