Window::Show/HideMouse not working as intended

[bandrewk]

Hello everyone,

 

I am experiencing some issues with the Window::Show/HideMouse methods. When calling both of them multiple times they basically stop working. For example:

 

bool App::Start()
{
//Initialize Steamworks (optional)
/*if (!Steamworks::Initialize())
{
System::Print("Error: Failed to initialize Steam.");
return false;
}*/
//Create a window
window = Leadwerks::Window::Create("cc");
window->ShowMouse();
//Create a context
context = Context::Create(window);

//Create a world
world = World::Create();

//Create a camera
camera = Camera::Create();
camera->Move(0,2,-5);

//Hide the mouse cursor
window->HideMouse();

std::string mapname = System::GetProperty("map","Maps/start.map");
Map::Load(mapname);

//Move the mouse to the center of the screen
window->SetMousePosition(context->GetWidth()/2,context->GetHeight()/2);

window->ShowMouse();
window->HideMouse();
return true;
}

 

In the above example the mouse pointer will be visible, but it should be hidden.

[miko93]

At least for Windows, I assume LW is using the Win API ShowCursor function.

See here: http://msdn.microsoft.com/de-de/library/windows/desktop/ms648396%28v=vs.85%29.aspx

 

This function actually uses a counter, not just switching the cursor on/off. Starting with 0 = mouse ON (!).

 

Counting through your code:

 

Program Start: 0

Call to ShowMouse: 1

Call to Hidemouse: 0

Call to ShowMouse: 1

Call to HideMouse: 0

 

As Windows hides the mouse with counter -1 and below, it is never hidden - I think.

If this really is the case, the LW docs might need a bit of updating...

[Josh]

I just call ShowCursor(). Did not know there was anything more complicated to it than that.

 

Added some internal logic that will make this work as expected.