C++ Created DLL File To Use In VB6

[baka]

I asked Poe, here what I got:

Declare Function NvAPI_Initialize Lib "nvapi.dll" () As Long
Declare Function NvAPI_EnumPhysicalGPUs Lib "nvapi.dll" (ByRef gpuHandles As Long, ByRef gpuCount As Long) As Long
Declare Function NvAPI_GPU_SetEDID Lib "nvapi.dll" (ByVal gpuHandle As Long, ByVal displayPath As Long) As Long
```
Public Sub EnableNvOptimus()
    Dim nvapiInitResult As Long
    Dim gpuHandles(1 To 10) As Long ' Adjust the array size as per your requirement
    Dim gpuCount As Long
    
    nvapiInitResult = NvAPI_Initialize()
    
    If nvapiInitResult = 0 Then
        NvAPI_EnumPhysicalGPUs VarPtr(gpuHandles(1)), gpuCount
        
        If gpuCount > 0 Then
            NvAPI_GPU_SetEDID gpuHandles(1), 0 ' Set the displayPath parameter as per your requirement
        End If
    End If
End Sub

now Im not sure if this works.
also asked about it and here the answer:

When using Direct2D, the NvOptimusEnablement setting is not directly applicable because it specifically pertains to NVIDIA Optimus technology, which is primarily used for switching between integrated and discrete GPUs on laptops to optimize power consumption. Since Direct2D runs primarily on the GPU, it already leverages the power of the GPU for rendering, regardless of whether you choose hardware or software mode.

In hardware mode, Direct2D will utilize the GPU for rendering, which can provide faster performance and take advantage of GPU memory. This mode is usually recommended for most scenarios, especially if your system has a dedicated GPU.

In software mode, Direct2D operates using the CPU and system memory for rendering. While it may be useful in certain situations, such as when you don't have a dedicated GPU or need to perform specific CPU-based operations, it generally results in slower performance compared to hardware mode.

In summary, when using Direct2D, you can choose between hardware and software modes based on your specific requirements. NvOptimusEnablement is not directly applicable to Direct2D, as it is primarily relevant to GPU switching on laptops.