Multiline button text won't work in CF2.0?!?

Here's what I've got written:

public class FormMain : System.Windows.Forms.Form

{

public const int GWL_STYLE = (-16); // HOPE THIS IS OK VALUE ! GOT IT OFF THE NET !

public const int BS_MULTILINE = 0x4000; // HOPE THIS IS OK VALUE ! GOT IT OFF THE NET !

[DllImport("coredll.dll")]

private static extern int GetWindowLong(IntPtr hWnd, int nItem);

[DllImport("coredll.dll")]

private static extern void SetWindowLong(IntPtr hWnd, int nItem, int nValue);

...

public FormMain()

{

int style = GetWindowLong(this.button1.Handle, GWL_STYLE);

SetWindowLong(this.button1.Handle, GWL_STYLE, style | BS_MULTILINE);

...

}

private void FormMain_Paint(object sender, PaintEventArgs e)

{

string tmpStr1 = "new";

string tmpStr2 = "line"

button1.Text = tmpStr1 + "\r" + tmpStr2; // tried \n also, will try \r\n too...

...

}

All I get showing in the button is new□line (text is still in one line, but there's that rectangle like character between the two strings)...

Plz help. TIA