| DWORD GetViewportOrg(hdc) | |||||
| HDC hdc; | /* handle of device context | */ | |||
The GetViewportOrg function retrieves the x- and y-coordinates of the origin of the viewport associated with the given device context.
hdc
Identifies the device context.
The low-order word of the return value contains the viewport origin's x-coordinate, in device coordinates, if the function is successful; the high-order word contains the y-coordinate of the viewport origin.
The following example uses the GetViewportOrg function and the LOWORD and HIWORD macros to retrieve the x- and y-coordinates of the viewport origin:
HDC hdc;
DWORD dw;
int xViewOrg, yViewOrg;
hdc = GetDC(hwnd);
dw = GetViewportOrg(hdc);
ReleaseDC(hwnd, hdc);
xViewOrg = LOWORD(dw);
yViewOrg = HIWORD(dw);