private static void glBuildFont()
{
IntPtr font;
IntPtr oldfont;
fontbase = Gl.glGenLists(96);
font = Gdi.CreateFont(
-10, // Height Of Font
0, // Width Of Font
0, // Angle Of Escapement
0, // Orientation Angle
Gdi.FW_BOLD, // Font Weight
false, // Italic
false, // Underline
false, // Strikeout
Gdi.ANSI_CHARSET, // Character Set Identifier
Gdi.OUT_TT_PRECIS, // Output Precision
Gdi.CLIP_DEFAULT_PRECIS, // Clipping Precision
Gdi.ANTIALIASED_QUALITY, // Output Quality
Gdi.FF_DONTCARE | Gdi.DEFAULT_PITCH, // Family And Pitch
"Verdana"); // Font Name
oldfont = Gdi.SelectObject(hDC, font); // Selects The Font We Want
Wgl.wglUseFontBitmaps(hDC, 32, 96, fontbase); // Builds 96 Characters Starting At Character 32
Gdi.SelectObject(hDC, oldfont); // Selects The Font We Want
Gdi.DeleteObject(font); // Delete The Font
}
public void Load(string FontFamily, int Size)
{
IntPtr font;
IntPtr oldfont;
fontbase = Gl.glGenLists(257);
font = Gdi.CreateFont(
-Size,
0,
0,
0,
Gdi.FW_BOLD,
false,
false,
false,
Gdi.ANSI_CHARSET,
Gdi.OUT_TT_PRECIS,
Gdi.CLIP_DEFAULT_PRECIS,
Gdi.ANTIALIASED_QUALITY,
Gdi.FF_DONTCARE | Gdi.DEFAULT_PITCH,
FontFamily
);
IntPtr hDC = Wgl.wglGetCurrentDC();
oldfont = Gdi.SelectObject(hDC, font);
Wgl.wglUseFontBitmapsA(hDC, 0, 256, fontbase);
Gdi.SelectObject(hDC, oldfont);
Gdi.DeleteObject(font);
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
// free managed resources
_mat.Dispose();
}
// free native resources if there are any.
User.ReleaseDC(_windowHandle, _windowDC);
Gdi.DeleteDC(_compatDC);
Gdi.DeleteObject(_bitmap);
_hasFrame = false;
}
public static Size MeasureString(Graphics g, string text, Font font, int width)
{
Size size;
TextDetails td = new TextDetails(text, font, width);
if (_mapTextSizes.TryGetValue(td, out size))
{
return(size);
}
IntPtr hDC = g.GetHdc();
try
{
IntPtr hFont = font.ToHfont();
try
{
IntPtr hOldFont = Gdi.SelectObject(hDC, hFont);
try
{
Rectangle rect = new Rectangle(0, 0, width, 0);
RECT r = new RECT(rect);
User.DrawTextFlags uFormat = User.DrawTextFlags.DT_WORDBREAK | User.DrawTextFlags.DT_CALCRECT;
User.DrawText(hDC, text, text.Length, ref r, uFormat);
size = new Size(r.Right, r.Bottom);
_mapTextSizes[td] = size;
return(size);
}
finally
{
Gdi.SelectObject(hDC, hOldFont);
}
}
finally
{
Gdi.DeleteObject(hFont);
}
}
finally
{
g.ReleaseHdc(hDC);
}
}
public static Bitmap CaptureDesktop()
{
Bitmap bmp = null;
{
var hDc = IntPtr.Zero;
try
{
SIZE size;
hDc = Win32.GetDC(Win32.GetDesktopWindow());
var hMemDc = Gdi.CreateCompatibleDC(hDc);
size.Cx = Win32.GetSystemMetrics
(Win32.SmCxscreen);
size.Cy = Win32.GetSystemMetrics
(Win32.SmCyscreen);
var hBitmap = Gdi.CreateCompatibleBitmap(hDc, size.Cx, size.Cy);
if (hBitmap != IntPtr.Zero)
{
var hOld = Gdi.SelectObject
(hMemDc, hBitmap);
Gdi.BitBlt(hMemDc, 0, 0, size.Cx, size.Cy, hDc,
0, 0, Gdi.Srccopy);
Gdi.SelectObject(hMemDc, hOld);
Gdi.DeleteDC(hMemDc);
bmp = Image.FromHbitmap(hBitmap);
Gdi.DeleteObject(hBitmap);
// GC.Collect();
}
}
finally
{
if (hDc != IntPtr.Zero)
{
Win32.ReleaseDC(Win32.GetDesktopWindow(), hDc);
}
}
}
return(bmp);
}
private int BuildFont(Font f)
{
int fontbase = Gl.glGenLists(96);
// get the device context
IntPtr hDC = User.GetDC(glControl.Handle);
IntPtr hFont = f.ToHfont();
IntPtr oldfont = Gdi.SelectObject(hDC, hFont); // Selects The Font We Want
Wgl.wglUseFontBitmaps(hDC, 32, 96, fontbase); // Builds 96 Characters Starting At Character 32
Gdi.SelectObject(hDC, oldfont); // swap in the old font
Gdi.DeleteObject(hFont); // Delete the font handle we obtained
User.ReleaseDC(glControl.Handle, hDC); // release the hDC we acquired
// return the font base
return(fontbase);
}
private void Init()
{
_windowDC = User.GetWindowDC(_windowHandle); // hdcSys
_compatDC = Gdi.CreateCompatibleDC(_windowDC); // hdcMem
BITMAPINFO bi = new BITMAPINFO();
bi.bmiHeader.Init();
bi.bmiHeader.biWidth = _rc.Width;
bi.bmiHeader.biHeight = -_rc.Height;
bi.bmiHeader.biPlanes = 1;
bi.bmiHeader.biBitCount = 32;
_bitmap = Gdi.CreateDIBSection(_windowDC, ref bi, DIBColors.DIB_RGB_COLORS, out _bitmapPixels, IntPtr.Zero, 0);
IntPtr hOldBmp = Gdi.SelectObject(_compatDC, _bitmap);
Gdi.DeleteObject(hOldBmp);
_mat = new Image <Bgra, byte>(_rc.Width, _rc.Height, 0, _bitmapPixels);
}
public BOOL Delete()
{
return(Gdi.DeleteObject(this));
}
public bool Delete()
{
return(Gdi.DeleteObject(this));
}
public static void DrawString(Graphics g, string text, Font font, Color color, Rectangle rect, Alignment alignment, VAlignment valignment, TextSplitting textSplitting, Ampersands ampersands)
{
if (g == null)
{
throw new ArgumentNullException("g");
}
if (text == null)
{
throw new ArgumentNullException("text");
}
if (font == null)
{
throw new ArgumentNullException("font");
}
if (ampersands == Ampersands.Display)
{
text = text.Replace("&", "&&");
}
float[] txValues = g.Transform.Elements;
IntPtr hClipRgn = g.Clip.GetHrgn(g);
IntPtr hDC = g.GetHdc();
Gdi.SelectClipRgn(hDC, hClipRgn);
int oldGraphicsMode = Gdi.SetGraphicsMode(hDC, 2);
XFORM oldXForm = new XFORM();
Gdi.GetWorldTransform(hDC, ref oldXForm);
XFORM newXForm = new XFORM();
newXForm.eM11 = txValues[0];
newXForm.eM12 = txValues[1];
newXForm.eM21 = txValues[2];
newXForm.eM22 = txValues[3];
newXForm.eDx = txValues[4];
newXForm.eDy = txValues[5];
Gdi.SetWorldTransform(hDC, ref newXForm);
try
{
IntPtr hFont = font.ToHfont();
IntPtr hOldFont = Gdi.SelectObject(hDC, hFont);
try
{
RECT r = new RECT(rect);
User.DrawTextFlags uFormat;
switch (textSplitting)
{
case TextSplitting.SingleLineEllipsis:
uFormat
= User.DrawTextFlags.DT_WORD_ELLIPSIS
| User.DrawTextFlags.DT_END_ELLIPSIS;
break;
case TextSplitting.MultiLine:
uFormat
= User.DrawTextFlags.DT_WORDBREAK;
break;
default:
throw new InvalidOperationException();
}
switch (alignment)
{
case Alignment.Left:
break;
case Alignment.Center:
uFormat
= User.DrawTextFlags.DT_CENTER;
break;
case Alignment.Right:
uFormat
= User.DrawTextFlags.DT_RIGHT;
break;
default:
throw new InvalidOperationException();
}
switch (valignment)
{
case VAlignment.Top:
break;
case VAlignment.Bottom:
uFormat |= User.DrawTextFlags.DT_BOTTOM | User.DrawTextFlags.DT_SINGLELINE;
break;
case VAlignment.Center:
uFormat |= User.DrawTextFlags.DT_VCENTER | User.DrawTextFlags.DT_SINGLELINE;
break;
}
uint bgr = (uint)((color.B << 16) | (color.G << 8) | (color.R));
uint oldColor = Gdi.SetTextColor(hDC, bgr);
try
{
BackgroundMode oldBackgroundMode = Gdi.SetBkMode(hDC, BackgroundMode.TRANSPARENT);
try
{
User.DrawText(hDC, text, text.Length, ref r, uFormat);
}
finally
{
Gdi.SetBkMode(hDC, oldBackgroundMode);
}
}
finally
{
Gdi.SetTextColor(hDC, oldColor);
}
}
finally
{
Gdi.SelectObject(hDC, hOldFont);
Gdi.DeleteObject(hFont);
}
}
finally
{
if (oldGraphicsMode == 1)
{
oldXForm.eM11 = 1;
oldXForm.eM12 = 0;
oldXForm.eM21 = 0;
oldXForm.eM22 = 1;
oldXForm.eDx = 0;
oldXForm.eDx = 0;
}
Gdi.SetWorldTransform(hDC, ref oldXForm);
Gdi.SetGraphicsMode(hDC, oldGraphicsMode);
g.ReleaseHdc(hDC);
if (hClipRgn != IntPtr.Zero)
{
g.Clip.ReleaseHrgn(hClipRgn);
}
}
}