.

Summary

The joy of coding for .Net Compact Framework is that you often need to do some tweaks to obtain what is normally available in the Full Framework. One instance is wrapping the text of a button control so that it can appear on multiple lines. There's no property readily available at design time to allow this on the .Net Compact Framework and an alternative is to use SetWindowLong and GetWindowLong.

.

private static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

.

Private Shared Function SetWindowLong(ByVal hWnd As IntPtr, ByVal nIndex As Integer, ByVal dwNewLong As Integer) As Integer

.

        SetWindowLong(hWnd, GWL_STYLE, (style | BS_CENTER | BS_VCENTER | BS_MULTILINE));

.

    Private Function SetWindowLong(ByVal hWnd As IntPtr, ByVal nIndex As Integer, ByVal dwNewLong As Integer) As Integer

.

    SetWindowLong(hWnd, GWL_STYLE, (style Or BS_VCENTER Or BS_MULTILINE))

.

Documentation

[SetWindowLong] on MSDN

.

        /// <summary>Applies new frame styles set using the SetWindowLong function. Sends a WM_NCCALCSIZE message to

.

///      static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

.

///      SetWindowLong(this.Handle, 0, 1);

.

static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

.

        SetWindowLong(this.Handle, 0, 1);

.

        SetWindowLong(Handle, GWL_EXSTYLE, GetWindowLong(Handle, GWL_EXSTYLE) ^ WS_EX_LAYERED);

.

  SetWindowLong (ll_handle, GWL_EXSTYLE, ll_Ret)

.

Summary

The SetWindowLongPtr API. Use this one instead of SetWindowLong to assure 64 bit compatibility.

.

public static IntPtr SetWindowLongPtr(HandleRef hWnd, int nIndex, IntPtr dwNewLong)

.

      return SetWindowLongPtr64(hWnd, nIndex, dwNewLong);

.

      return new IntPtr(SetWindowLong32(hWnd, nIndex, dwNewLong.ToInt32()));

.

[DllImport("user32.dll", EntryPoint="SetWindowLong")]

.

private static extern int SetWindowLong32(HandleRef hWnd, int nIndex, int dwNewLong);

.

[DllImport("user32.dll", EntryPoint="SetWindowLongPtr")]

.

private static extern IntPtr SetWindowLongPtr64(HandleRef hWnd, int nIndex, IntPtr dwNewLong);

.

  <System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint:="SetWindowLong")> _

.

  Private Shared Function SetWindowLong32(ByVal hWnd As IntPtr, <MarshalAs(UnmanagedType.I4)>nIndex As WindowLongFlags, ByVal dwNewLong As Integer) As Integer

.

  <System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint:="SetWindowLongPtr")> _

.

  Private Shared Function SetWindowLongPtr64(ByVal hWnd As IntPtr, <MarshalAs(UnmanagedType.I4)>nIndex As WindowLongFlags, ByVal dwNewLong As IntPtr) As IntPtr

.

  Public Shared Function SetWindowLongPtr(ByVal hWnd As IntPtr, nIndex As WindowLongFlags, ByVal dwNewLong As IntPtr) As IntPtr

.

      Return SetWindowLongPtr64(hWnd, nIndex, dwNewLong)

.

      Return New IntPtr(SetWindowLong32(hWnd, nIndex, dwNewLong.ToInt32))

.

Public Declare Function SetWindowLongPtr Lib "user32" Alias "SetWindowLongPtrA" _

.

Documentation

[SetWindowLongPtr] on MSDN

.

Additional information: Unable to find an entry point named 'SetWindowLongPtrA' in DLL 'user32'

.

Summary

The SetWindowLongPtr API. Use this one instead of SetWindowLong to assure 64 bit compatibility.

.

// SetWindowLongPtr

.

public static IntPtr SetWindowLongPtr(HandleRef hWnd, int nIndex, IntPtr dwNewLong)

.

      return SetWindowLongPtr64(hWnd, nIndex, dwNewLong);

.

      return new IntPtr(SetWindowLong32(hWnd, nIndex, dwNewLong.ToInt32()));

.

[DllImport("user32.dll", EntryPoint="SetWindowLong")]

.

private static extern int SetWindowLong32(HandleRef hWnd, int nIndex, int dwNewLong);

.

[DllImport("user32.dll", EntryPoint="SetWindowLongPtr")]

.

private static extern IntPtr SetWindowLongPtr64(HandleRef hWnd, int nIndex, IntPtr dwNewLong);

.

  <System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint:="SetWindowLong")> _

.

  Private Shared Function SetWindowLong32(ByVal hWnd As IntPtr, <MarshalAs(UnmanagedType.I4)>nIndex As WindowLongFlags, ByVal dwNewLong As Integer) As Integer

.

  <System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint:="SetWindowLongPtr")> _

.

  Private Shared Function SetWindowLongPtr64(ByVal hWnd As IntPtr, <MarshalAs(UnmanagedType.I4)>nIndex As WindowLongFlags, ByVal dwNewLong As IntPtr) As IntPtr

.

  Public Shared Function SetWindowLongPtr(ByVal hWnd As IntPtr, nIndex As WindowLongFlags, ByVal dwNewLong As IntPtr) As IntPtr

.

      Return SetWindowLongPtr64(hWnd, nIndex, dwNewLong)

.

      Return New IntPtr(SetWindowLong32(hWnd, nIndex, dwNewLong.ToInt32))

.

Public Declare Function SetWindowLongPtr Lib "user32" Alias "SetWindowLongPtrA" _

.

Documentation

[SetWindowLongPtr] on MSDN

.

Additional information: Unable to find an entry point named 'SetWindowLongPtrA' in DLL 'user32'

.

    ///         Applies new frame styles set using the SetWindowLong function. Sends a WM_NCCALCSIZE message

.

    ///     If you have changed certain window data using SetWindowLong, you must call SetWindowPos for the changes to

.

        ///     Applies new frame styles set using the SetWindowLong function. Sends a WM_NCCALCSIZE message to the window, even if the window's size is not being changed. If this flag is not specified, WM_NCCALCSIZE is sent only when the window's size is being changed.

.

WM_STYLECHANGED

0x7D

The WM_STYLECHANGED message is sent to a window after the SetWindowLong function has changed one or more of the window's styles.

.

WM_STYLECHANGING

0x7C

The WM_STYLECHANGING message is sent to a window when the SetWindowLong function is about to change one or more of the window's styles.

.

    /// <summary>Applies new frame styles set using the SetWindowLong function. Sends a WM_NCCALCSIZE message to

.

    ''' <summary>Applies new frame styles set using the SetWindowLong function. Sends a WM_NCCALCSIZE message to

.

Summary

WindowLongFlags - Flags for GetWindowLong, GetWindowLongPtr, SetWindowLong & SetWindowLongPtr

.

    /// The WM_STYLECHANGING message is sent to a window when the SetWindowLong function is about to change one or more of the window's styles.

.

    /// The WM_STYLECHANGED message is sent to a window after the SetWindowLong function has changed one or more of the window's styles

.

    '''The WM_STYLECHANGED message is sent to a window after the SetWindowLong function has changed one or more of the window's styles.

.

    '''The WM_STYLECHANGING message is sent to a window when the SetWindowLong function is about to change one or more of the window's styles.

.

    ''' The message is sent to a window after the <c>SetWindowLong</c> function has changed one or more of the window's styles.

.

    ''' The message is sent to a window when the <c>SetWindowLong</c> function is about to change one or more of the