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)
{
int retVal;
if (Marshal.SystemDefaultCharSize == 1)
{
// ANSI
IntNativeMethods.TEXTMETRICA lptmA = new IntNativeMethods.TEXTMETRICA();
retVal = IntUnsafeNativeMethods.GetTextMetricsA(hDC, ref lptmA);
lptm.tmHeight = lptmA.tmHeight;
lptm.tmAscent = lptmA.tmAscent;
lptm.tmDescent = lptmA.tmDescent;
lptm.tmInternalLeading = lptmA.tmInternalLeading;
lptm.tmExternalLeading = lptmA.tmExternalLeading;
lptm.tmAveCharWidth = lptmA.tmAveCharWidth;
lptm.tmMaxCharWidth = lptmA.tmMaxCharWidth;
lptm.tmWeight = lptmA.tmWeight;
lptm.tmOverhang = lptmA.tmOverhang;
lptm.tmDigitizedAspectX = lptmA.tmDigitizedAspectX;
lptm.tmDigitizedAspectY = lptmA.tmDigitizedAspectY;
lptm.tmFirstChar = (char)lptmA.tmFirstChar;
lptm.tmLastChar = (char)lptmA.tmLastChar;
lptm.tmDefaultChar = (char)lptmA.tmDefaultChar;
lptm.tmBreakChar = (char)lptmA.tmBreakChar;
lptm.tmItalic = lptmA.tmItalic;
lptm.tmUnderlined = lptmA.tmUnderlined;
lptm.tmStruckOut = lptmA.tmStruckOut;
lptm.tmPitchAndFamily = lptmA.tmPitchAndFamily;
lptm.tmCharSet = lptmA.tmCharSet;
}
else
{
// Unicode
retVal = IntUnsafeNativeMethods.GetTextMetricsW(hDC, ref lptm);
}
DbgUtil.AssertWin32(retVal != 0, "GetTextMetrics(hdc=[0x{0:X8}], [out TEXTMETRIC] failed.", unchecked ((int)hDC.Handle));
return(retVal);
}
/// <devdoc>
/// Returns a TEXTMETRIC structure for the font selected in the device context
/// represented by this object, in units of pixels.
/// </devdoc>
public IntNativeMethods.TEXTMETRIC GetTextMetrics()
{
IntNativeMethods.TEXTMETRIC tm = new IntNativeMethods.TEXTMETRIC();
HandleRef hdc = new HandleRef(this.dc, this.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);
/// <devdoc>
/// Returns a TEXTMETRIC structure for the font selected in the device context
/// represented by this object, in units of pixels.
/// </devdoc>
public IntNativeMethods.TEXTMETRIC GetTextMetrics()
{
IntNativeMethods.TEXTMETRIC tm = new IntNativeMethods.TEXTMETRIC();
HandleRef hdc = new HandleRef( this.dc, this.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 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;
}
