public static extern IntPtr SendMessage(HandleRef hWnd, int msg, int wParam, ref NativeMethods.CHARFORMATW lParam);
private void SetCharFormatFont(bool selectionOnly, Font value) {
ForceHandleCreate();
NativeMethods.LOGFONT logfont = new NativeMethods.LOGFONT();
FontToLogFont(value, logfont);
byte[] bytesFaceName;
int dwMask = RichTextBoxConstants.CFM_FACE | RichTextBoxConstants.CFM_SIZE | RichTextBoxConstants.CFM_BOLD |
RichTextBoxConstants.CFM_ITALIC | RichTextBoxConstants.CFM_STRIKEOUT | RichTextBoxConstants.CFM_UNDERLINE |
RichTextBoxConstants.CFM_CHARSET;
int dwEffects = 0;
if (value.Bold) dwEffects |= RichTextBoxConstants.CFE_BOLD;
if (value.Italic) dwEffects |= RichTextBoxConstants.CFE_ITALIC;
if (value.Strikeout) dwEffects |= RichTextBoxConstants.CFE_STRIKEOUT;
if (value.Underline) dwEffects |= RichTextBoxConstants.CFE_UNDERLINE;
if (Marshal.SystemDefaultCharSize == 1)
{
bytesFaceName = Encoding.Default.GetBytes(logfont.lfFaceName);
NativeMethods.CHARFORMATA cfA = new NativeMethods.CHARFORMATA();
for (int i=0; i<bytesFaceName.Length; i++) cfA.szFaceName[i] = bytesFaceName[i];
cfA.dwMask = dwMask;
cfA.dwEffects = dwEffects;
cfA.yHeight = (int) (value.SizeInPoints * 20);
cfA.bCharSet = logfont.lfCharSet;
cfA.bPitchAndFamily = logfont.lfPitchAndFamily;
UnsafeNativeMethods.SendMessage(new HandleRef(this, Handle), RichTextBoxConstants.EM_SETCHARFORMAT, selectionOnly ? RichTextBoxConstants.SCF_SELECTION : RichTextBoxConstants.SCF_ALL, cfA);
}
else
{
bytesFaceName = Encoding.Unicode.GetBytes(logfont.lfFaceName);
NativeMethods.CHARFORMATW cfW = new NativeMethods.CHARFORMATW();
for (int i=0; i<bytesFaceName.Length; i++) cfW.szFaceName[i] = bytesFaceName[i];
cfW.dwMask = dwMask;
cfW.dwEffects = dwEffects;
cfW.yHeight = (int) (value.SizeInPoints * 20);
cfW.bCharSet = logfont.lfCharSet;
cfW.bPitchAndFamily = logfont.lfPitchAndFamily;
UnsafeNativeMethods.SendMessage(new HandleRef(this, Handle), RichTextBoxConstants.EM_SETCHARFORMAT, selectionOnly ? RichTextBoxConstants.SCF_SELECTION : RichTextBoxConstants.SCF_ALL, cfW);
}
}
