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;
}
}
}
void CDpiAware::CenterDialog(HWND hDialog)
{
RECT rect = {}, rectAfter = {};
if (!hDialog || !GetWindowRect(hDialog, &rect))
return;
// If possible, open our startup dialogs on the monitor,
// where user have clicked our icon (shortcut on the desktop or TaskBar)
HMONITOR hDefault = ghWnd ? NULL : gpStartEnv->hStartMon;
// Position dialog in the workarea center
CDpiAware::GetCenteredRect(NULL, rect, hDefault);
MoveWindowRect(hDialog, rect);
if (IsPerMonitorDpi() && GetWindowRect(hDialog, &rectAfter))
{
if ((RectWidth(rect) != RectWidth(rectAfter)) || (RectHeight(rect) != RectHeight(rectAfter)))
{
CDpiAware::GetCenteredRect(NULL, rectAfter, NULL);
MoveWindowRect(hDialog, rectAfter);
}
}
}
