int CDpiAware::QueryDpi(HWND hWnd /*= NULL*/, DpiValue* pDpi /*= NULL*/)
{
#if defined(_DEBUG) && defined(DPI_144)
if (pDpi) pDpi->SetDpi(144,144);
return 144;
#endif
if (hWnd && IsPerMonitorDpi())
{
HMONITOR hMon = MonitorFromWindow(hWnd, MONITOR_DEFAULTTONEAREST);
if (hMon)
{
return QueryDpiForMonitor(hMon, pDpi);
}
}
return QueryDpiForWindow(hWnd, pDpi);
}
void CDpiAware::UpdateStartupInfo(CEStartupEnv* pStartEnv)
{
if (!pStartEnv)
return;
pStartEnv->bIsPerMonitorDpi = IsPerMonitorDpi();
for (INT_PTR i = ((int)pStartEnv->nMonitorsCount)-1; i >= 0; i--)
{
HMONITOR hMon = MonitorFromRect(&pStartEnv->Monitors[i].rcMonitor, MONITOR_DEFAULTTONEAREST);
if (!hMon)
continue;
for (int j = MDT_Effective_DPI; j <= MDT_Raw_DPI; j++)
{
DpiValue dpi;
QueryDpiForMonitor(hMon, &dpi, (MonitorDpiType)j);
pStartEnv->Monitors[i].dpis[j+1].x = dpi.Xdpi;
pStartEnv->Monitors[i].dpis[j+1].y = dpi.Xdpi;
}
}
}
int CDpiAware::QueryDpiForRect(const RECT& rcWnd, DpiValue* pDpi /*= NULL*/, MonitorDpiType dpiType /*= MDT_Default*/)
{
HMONITOR hMon = MonitorFromRect(&rcWnd, MONITOR_DEFAULTTONEAREST);
return QueryDpiForMonitor(hMon, pDpi, dpiType);
}
