Raw Input x64 API Question - GetRawInputDeviceList call fails in Windows 7 x64

Question

Hello,

I'm porting a c# application developed on 32bit Windows 7 that interfaces with a USB scale to 64 bit Windows 7. The call to GetRawInputDeviceList fails with error code 87 "incorrect parameters." Specifically I used the following pinvoke prototype:

[DllImport("User32.dll", SetLastError = true)]

 

extern static UInt32 GetRawInputDeviceList(IntPtr pRawInputDeviceList,
ref UInt32 puiNumDevices,
UInt32 cbSize);

I realize that IntPtr and cbSize are going to change between x32 and x64 howerever I am unable to find GetRawInputDeviceList 64 bit prototype.

Yury 

Answer 1

I got it working by building it as a 32 bit application.

To do this, right click on the project, select properties, and go to the build tab. Change platform target from any to x86 to specify it as a 32-bit application.

Might not be an ideal fix for you, but it's a lot better than saying 'this isn't the correct forum', especially when this is Google's first hit.