/// <summary>
/// Creates a new <see cref="NativeBuffer"/> with the given dimensions.
/// </summary>
/// <param name="buffer">The storage location for the buffer object.</param>
/// <param name="w">The width.</param>
/// <param name="h">The height.</param>
/// <param name="isDIB">True if the buffer should be DIB backed, false for Marshal.</param>
/// <returns>Returns the data buffer.</returns>
public static ARGB* CreateBuffer(out NativeBuffer buffer, int w, int h, bool isDIB)
{
ARGB* pixels;
IntPtr handle;
DeviceContext context = null;
if(isDIB)
{
context = new DeviceContext();
//create info
BITMAPINFO info = new BITMAPINFO();
//init with size
info.init(w, h);
//create DIB
handle = CreateDIBSection(context.Handle, ref info, DIB_RGB_COLORS, out pixels, IntPtr.Zero, 0);
WinAPIUtils.Assert(handle != IntPtr.Zero);
//select the DIB into the DC
context.Push(handle);
}else
{
handle = Marshal.AllocHGlobal(w * h * 4);
pixels = (ARGB*)handle;
}
//create buffer wrapper
buffer = new NativeBuffer{isDIB = isDIB, Handle = handle, Context = context};
//return the data
return pixels;
}
/// <summary>
/// Creates a new <see cref="DeviceContext"/> compatible with the given <see cref="DeviceContext"/>.
/// </summary>
/// <param name="deviceContext">The <see cref="DeviceContext"/></param>
public DeviceContext(DeviceContext deviceContext)
{
Handle = CreateCompatibleDC(deviceContext.Handle);
WinAPIUtils.Assert(Handle != IntPtr.Zero);
}