public IntNativeMethods.TEXTMETRIC GetTextMetrics()
{
IntNativeMethods.TEXTMETRIC lptm = new IntNativeMethods.TEXTMETRIC();
HandleRef hDC = new HandleRef(this.dc, this.dc.Hdc);
bool flag = this.dc.MapMode != DeviceContextMapMode.Text;
if (flag)
{
this.dc.SaveHdc();
}
try
{
if (flag)
{
DeviceContextMapMode mode = this.dc.SetMapMode(DeviceContextMapMode.Text);
}
IntUnsafeNativeMethods.GetTextMetrics(hDC, ref lptm);
}
finally
{
if (flag)
{
this.dc.RestoreHdc();
}
}
return(lptm);
}
/// <summary>
/// Returns a TEXTMETRIC structure for the font selected in the device context
/// represented by this object, in units of pixels.
/// </summary>
public IntNativeMethods.TEXTMETRIC GetTextMetrics()
{
IntNativeMethods.TEXTMETRIC tm = new IntNativeMethods.TEXTMETRIC();
HandleRef hdc = new HandleRef(dc, dc.Hdc);
// Set the mapping mode to MM_TEXT so we deal with units of pixels.
DeviceContextMapMode mapMode = dc.MapMode;
bool setupDC = mapMode != DeviceContextMapMode.Text;
if (setupDC)
{
// Changing the MapMode will affect viewport and window extent and origin, we save the dc
// state so all those properties can be properly restored once done.
dc.SaveHdc();
}
try
{
if (setupDC)
{
mapMode = dc.SetMapMode(DeviceContextMapMode.Text);
}
IntUnsafeNativeMethods.GetTextMetrics(hdc, ref tm);
}
finally
{
if (setupDC)
{
dc.RestoreHdc();
}
}
return(tm);
}
