private unsafe bool GetCalendarGridInfoText(MCGIP dwPart, int calendarIndex, int row, int column, out string text)
{
const int nameLength = 128;
Span <char> name = stackalloc char[nameLength + 2];
bool result;
fixed(char *pName = name)
{
var gridInfo = new MCGRIDINFO
{
cbSize = (uint)sizeof(MCGRIDINFO),
dwFlags = MCGIF.NAME,
dwPart = dwPart,
iCalendar = calendarIndex,
iCol = column,
iRow = row,
pszName = pName,
cchName = (uint)name.Length - 1
};
result = User32.SendMessageW(_owner, (User32.WM)MCM.GETCALENDARGRIDINFO, IntPtr.Zero, ref gridInfo) != IntPtr.Zero;
}
text = name.SliceAtFirstNull().ToString();
return(result);
}
private bool GetCalendarGridInfo(ref MCGRIDINFO gridInfo)
{
// Do not use this if gridInfo.dwFlags contains MCGIF_NAME;
// use GetCalendarGridInfoText() instead.
Debug.Assert(
(gridInfo.dwFlags & MCGIF.NAME) == 0,
"Param dwFlags contains MCGIF_NAME, use GetCalendarGridInfoText() to retrieve the text of a calendar part.");
gridInfo.dwFlags &= ~MCGIF.NAME;
return(User32.SendMessageW(_owner, (User32.WM)MCM.GETCALENDARGRIDINFO, IntPtr.Zero, ref gridInfo) != IntPtr.Zero);
}
public unsafe void MCGRIDINFO_x32_ensure_layout()
{
MCGRIDINFO sut = new MCGRIDINFO();
byte * addr = (byte *)&sut;
Assert.Equal(0, (byte *)&sut.cbSize - addr); // 4, UINT
Assert.Equal(4, (byte *)&sut.dwPart - addr); // 4, DWORD
Assert.Equal(8, (byte *)&sut.dwFlags - addr); // 4, DWORD
Assert.Equal(12, (byte *)&sut.iCalendar - addr); // 4, int
Assert.Equal(16, (byte *)&sut.iRow - addr); // 4, int
Assert.Equal(20, (byte *)&sut.iCol - addr); // 4, int
Assert.Equal(24, (byte *)&sut.bSelected - addr); // 4, BOOL
Assert.Equal(28, (byte *)&sut.stStart - addr); // 16, SYSTEMTIME
Assert.Equal(44, (byte *)&sut.stEnd - addr); // 16, SYSTEMTIME
Assert.Equal(60, (byte *)&sut.rc - addr); // 16, RECT
Assert.Equal(76, (byte *)&sut.pszName - addr); // 4, PWSTR
Assert.Equal(80, (byte *)&sut.cchName - addr); // 4, size_t
}
private unsafe bool GetCalendarGridInfo(
MCGIF dwFlags,
MCGIP dwPart,
int calendarIndex,
int row,
int column,
out RECT rectangle,
out Kernel32.SYSTEMTIME endDate,
out Kernel32.SYSTEMTIME startDate)
{
Debug.Assert(
(dwFlags & ~(MCGIF.DATE | MCGIF.RECT)) == 0,
"GetCalendarGridInfo() should be used only to obtain Date and Rect,"
+ "dwFlags has flag bits other that MCGIF_DATE and MCGIF_RECT");
var gridInfo = new MCGRIDINFO
{
cbSize = (uint)sizeof(MCGRIDINFO),
dwFlags = dwFlags,
dwPart = dwPart,
iCalendar = calendarIndex,
iCol = column,
iRow = row
};
try
{
bool result = GetCalendarGridInfo(ref gridInfo);
rectangle = gridInfo.rc;
endDate = gridInfo.stEnd;
startDate = gridInfo.stStart;
return(result);
}
catch
{
rectangle = new RECT();
endDate = new Kernel32.SYSTEMTIME();
startDate = new Kernel32.SYSTEMTIME();
return(false);
}
}
public unsafe void MCGRIDINFO_x64_ensure_layout()
{
if (!Environment.Is64BitProcess)
{
return;
}
MCGRIDINFO sut = new MCGRIDINFO();
byte * addr = (byte *)&sut;
Assert.Equal(0, (byte *)&sut.cbSize - addr); // 4, UINT
Assert.Equal(4, (byte *)&sut.dwPart - addr); // 4, DWORD
Assert.Equal(8, (byte *)&sut.dwFlags - addr); // 4, DWORD
Assert.Equal(12, (byte *)&sut.iCalendar - addr); // 4, int
Assert.Equal(16, (byte *)&sut.iRow - addr); // 4, int
Assert.Equal(20, (byte *)&sut.iCol - addr); // 4, int
Assert.Equal(24, (byte *)&sut.bSelected - addr); // 4, BOOL
Assert.Equal(28, (byte *)&sut.stStart - addr); // 16, SYSTEMTIME
Assert.Equal(44, (byte *)&sut.stEnd - addr); // 16, SYSTEMTIME
Assert.Equal(60, (byte *)&sut.rc - addr); // 16, RECT
// 4 bytes alignment 76 -> 80
Assert.Equal(80, (byte *)&sut.pszName - addr); // 8, PWSTR
Assert.Equal(88, (byte *)&sut.cchName - addr); // 8, size_t
}
public extern static IntPtr SendMessage(HandleRef hWnd, int Msg, int wParam, [In, Out] ref MCGRIDINFO gridInfo);
