GDI USAGE ERROR: DC 0x2d0110d1 that contains selected object being deleted

frank — Mon, 09 Jan 2017 18:25:10 +0000

uint32_t WIN_FONT::GetTextWidth(const char* theText, uint32_t theLength)
// Return the number of pixels width the text is base on the font info.
{
 uint32_t width = 0;

 wchar_t* wcString = NULL;
 int32_t wcLength = CreateWideString(theText, theLength, &wcString);
 if (wcLength > 0)
 {
  HDC hdc = GetDC(NULL);
  (HFONT)SelectObject(hdc, (HGDIOBJ)winFont);

  SIZE size;
  if(GetTextExtentPoint32W(hdc, wcString, wcLength, &size))
  {
   width = size.cx;
  }
  ReleaseDC(NULL, hdc); // <= Error detected here
  delete[] wcString;
 }

 return width;
}

The post GDI USAGE ERROR: DC 0x2d0110d1 that contains selected object being deleted appeared first on Techy Things.

Convert clipping area to win32 rect

frank — Wed, 08 Oct 2014 20:53:33 +0000

RECT rect;
rect.left = tmp.X;
rect.right = tmp.X + tmp.W;
rect.bottom = tmp.Y;
rect.top = tmp.Y + tmp.H;
ExtTextOutW(bitmapHDC, x, y, ETO_CLIPPED, &rect, wcString, wcLength, NULL);

The post Convert clipping area to win32 rect appeared first on Techy Things.

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GDI USAGE ERROR: DC 0x2d0110d1 that contains selected object being deleted

Convert clipping area to win32 rect