public void Reset(int hPageNum, int vPageNum, int newWidth, int newHeight)
{
this.pageNumFlags = (hPageNum << 8) | vPageNum;
this.ReleaseUnManagedResource();
this.ClearPreviousStoredValues();
var orgHdc = MyWin32.CreateCompatibleDC(IntPtr.Zero);
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(newWidth, newHeight, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
hbmp = bmp.GetHbitmap();
MyWin32.SelectObject(orgHdc, hbmp);
MyWin32.PatBlt(orgHdc, 0, 0, newWidth, newHeight, MyWin32.WHITENESS);
MyWin32.SetBkMode(orgHdc, MyWin32._SetBkMode_TRANSPARENT);
hFont = defaultHFont;
MyWin32.SelectObject(orgHdc, hFont);
currentClipRect = new System.Drawing.Rectangle(0, 0, newWidth, newHeight);
MyWin32.SelectObject(orgHdc, hRgn);
gx = System.Drawing.Graphics.FromHdc(orgHdc);
this.originalHdc = orgHdc;
gx.Clear(System.Drawing.Color.White);
MyWin32.SetRectRgn(hRgn, 0, 0, newWidth, newHeight);
left = hPageNum * newWidth;
top = vPageNum * newHeight;
right = left + newWidth;
bottom = top + newHeight;
#if DEBUG
debug_resetCount++;
#endif
}
void CreateGraphicsFromNativeHdc(int width, int height)
{
//3. create original dc from memory dc and prepare background
var orgHdc = MyWin32.CreateCompatibleDC(IntPtr.Zero);
bgBmp = new System.Drawing.Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
hbmp = bgBmp.GetHbitmap();
MyWin32.SelectObject(orgHdc, hbmp);
MyWin32.PatBlt(orgHdc, 0, 0, width, height, MyWin32.WHITENESS);
MyWin32.SetBkMode(orgHdc, MyWin32._SetBkMode_TRANSPARENT);
//4. font
hFont = MyWin32.SelectObject(orgHdc, hFont);
//5. region
hRgn = MyWin32.CreateRectRgn(0, 0, width, height);
MyWin32.SelectObject(orgHdc, hRgn);
//6. create graphics from hdc***
gx = System.Drawing.Graphics.FromHdc(orgHdc);
this.originalHdc = orgHdc;
}