public IPlatformHandle GetCursor(StandardCursorType cursorType)
{
IPlatformHandle rv;
if (!Cache.TryGetValue(cursorType, out rv))
{
Cache[cursorType] =
rv =
new PlatformHandle(
GetCursor(CursorTypeMapping[cursorType]).Handle,
"GTKCURSOR");
}
return rv;
}
public IPlatformHandle GetCursor(StandardCursorType cursorType)
{
IPlatformHandle rv;
if (!Cache.TryGetValue(cursorType, out rv))
{
Cache[cursorType] =
rv =
new PlatformHandle(
UnmanagedMethods.LoadCursor(IntPtr.Zero, new IntPtr(CursorTypeMapping[cursorType])),
PlatformConstants.CursorHandleType);
}
return rv;
}
private void CreateWindow()
{
// Ensure that the delegate doesn't get garbage collected by storing it as a field.
_wndProcDelegate = new UnmanagedMethods.WndProc(WndProc);
_className = Guid.NewGuid().ToString();
UnmanagedMethods.WNDCLASSEX wndClassEx = new UnmanagedMethods.WNDCLASSEX
{
cbSize = Marshal.SizeOf(typeof(UnmanagedMethods.WNDCLASSEX)),
style = 0,
lpfnWndProc = _wndProcDelegate,
hInstance = Marshal.GetHINSTANCE(GetType().Module),
hCursor = DefaultCursor,
hbrBackground = (IntPtr)5,
lpszClassName = _className,
};
ushort atom = UnmanagedMethods.RegisterClassEx(ref wndClassEx);
if (atom == 0)
{
throw new Win32Exception();
}
_hwnd = CreateWindowOverride(atom);
if (_hwnd == IntPtr.Zero)
{
throw new Win32Exception();
}
Handle = new PlatformHandle(_hwnd, PlatformConstants.WindowHandleType);
}
private void CreateWindow()
{
// Ensure that the delegate doesn't get garbage collected by storing it as a field.
_wndProcDelegate = new UnmanagedMethods.WndProc(WndProc);
_className = Guid.NewGuid().ToString();
UnmanagedMethods.WNDCLASSEX wndClassEx = new UnmanagedMethods.WNDCLASSEX
{
cbSize = Marshal.SizeOf(typeof(UnmanagedMethods.WNDCLASSEX)),
style = 0,
lpfnWndProc = _wndProcDelegate,
hInstance = Marshal.GetHINSTANCE(GetType().Module),
hCursor = DefaultCursor,
hbrBackground = IntPtr.Zero,
lpszClassName = _className,
};
ushort atom = UnmanagedMethods.RegisterClassEx(ref wndClassEx);
if (atom == 0)
{
throw new Win32Exception();
}
_hwnd = CreateWindowOverride(atom);
if (_hwnd == IntPtr.Zero)
{
throw new Win32Exception();
}
Handle = new PlatformHandle(_hwnd, PlatformConstants.WindowHandleType);
var monitor = UnmanagedMethods.MonitorFromWindow(
_hwnd,
UnmanagedMethods.MONITOR.MONITOR_DEFAULTTONEAREST);
if (UnmanagedMethods.ShCoreAvailable)
{
uint dpix, dpiy;
if (UnmanagedMethods.GetDpiForMonitor(
monitor,
UnmanagedMethods.MONITOR_DPI_TYPE.MDT_EFFECTIVE_DPI,
out dpix,
out dpiy) == 0)
{
_scaling = dpix / 96.0;
}
}
}
