Is there API to know screen ratio?

[Pravin Kumar]

Hello,

Best way may be to get the screen DC and use GetDeviceCaps to find the pixels (VERTRES, HORZRES) and pixels per inch (LOGPIXELSX, LOGPIXELSY) of X and Y direction. From these data, it is easy to calculate the aspect ratio.

Better still, GetDeviceCaps, when called with parameter HORZSIZE / VERTSIZE returns the entire width / height of physical screen.

HDC hDC = ::GetDC(NULL);
int nWidth = GetDeviceCaps(hDC, HORZSIZE);
int nHeight = GetDeviceCaps(hDC, VERTSIZE);
CString sRatio;
sRatio.Format("Width to Height ratio is %d:%d", nWidth, nHeight);
pDC->TextOut(0, 0, sRatio);
::ReleaseDC(NULL, hDC);

Regards,
Pravin.