C# Signature:
[DllImport("gdi32.dll")]
static extern bool FillRgn(IntPtr hdc, IntPtr hrgn, IntPtr hbr);
User-Defined Types:
None.
Notes:
Its probably easier to use the graphics functions in .net to do this for you.
Ie. Graphics.FromHdc(...).FillRegion( ..., ...)
Tips & Tricks:
Please add some!
Sample Code test:
// Up Top
[DllImport("user32.dll",EntryPoint="GetDC")]
static extern IntPtr GetDC(IntPtr hWnd);
[DllImport("gdi32.dll")]
static extern bool FillRgn(IntPtr hdc, IntPtr hrgn, IntPtr hbr);
[DllImport("gdi32.dll")]
static extern IntPtr CreateRectRgn(int nLeftRect, int nTopRect, int nRightRect,
int nBottomRect);
[DllImport("gdi32.dll")]
static extern IntPtr CreateSolidBrush(uint crColor);
[DllImport("gdi32.dll")]
static extern bool DeleteObject(IntPtr hObject);
// Then whereever:
// This paints the current form black
IntPtr wDc = GetDC(this.Handle);
int mx = Screen.PrimaryScreen.WorkingArea.Width;
int my = Screen.PrimaryScreen.WorkingArea.Height;
IntPtr brush = CreateSolidBrush(0x0); // black, of format : //0x00bbggrr
FillRgn(wDc, CreateRectRgn(0,0,mx,my), brush);
DeleteObject(brush);
Alternative Managed API:
Do you know one? Please contribute it!
