public static int GetTextMetrics(HandleRef hDC, ref IntNativeMethods.TEXTMETRIC lptm)
{
int retVal = IntUnsafeNativeMethods.GetTextMetricsW(hDC, ref lptm);
DbgUtil.AssertWin32(retVal != 0, "GetTextMetrics(hdc=[0x{0:X8}], [out TEXTMETRIC] failed.", hDC.Handle);
return(retVal);
}
public static int GetTextMetrics(HandleRef hDC, ref IntNativeMethods.TEXTMETRIC lptm)
{
if (Marshal.SystemDefaultCharSize == 1)
{
IntNativeMethods.TEXTMETRICA textmetrica = new IntNativeMethods.TEXTMETRICA();
int textMetricsA = GetTextMetricsA(hDC, ref textmetrica);
lptm.tmHeight = textmetrica.tmHeight;
lptm.tmAscent = textmetrica.tmAscent;
lptm.tmDescent = textmetrica.tmDescent;
lptm.tmInternalLeading = textmetrica.tmInternalLeading;
lptm.tmExternalLeading = textmetrica.tmExternalLeading;
lptm.tmAveCharWidth = textmetrica.tmAveCharWidth;
lptm.tmMaxCharWidth = textmetrica.tmMaxCharWidth;
lptm.tmWeight = textmetrica.tmWeight;
lptm.tmOverhang = textmetrica.tmOverhang;
lptm.tmDigitizedAspectX = textmetrica.tmDigitizedAspectX;
lptm.tmDigitizedAspectY = textmetrica.tmDigitizedAspectY;
lptm.tmFirstChar = (char)textmetrica.tmFirstChar;
lptm.tmLastChar = (char)textmetrica.tmLastChar;
lptm.tmDefaultChar = (char)textmetrica.tmDefaultChar;
lptm.tmBreakChar = (char)textmetrica.tmBreakChar;
lptm.tmItalic = textmetrica.tmItalic;
lptm.tmUnderlined = textmetrica.tmUnderlined;
lptm.tmStruckOut = textmetrica.tmStruckOut;
lptm.tmPitchAndFamily = textmetrica.tmPitchAndFamily;
lptm.tmCharSet = textmetrica.tmCharSet;
return(textMetricsA);
}
return(GetTextMetricsW(hDC, ref lptm));
}
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);
}
public static extern int GetTextMetricsW(HandleRef hDC, [In, Out] ref IntNativeMethods.TEXTMETRIC lptm);
