Use correct font for ownerdraw buttons

[Michael Kaufmann]

This patch fixes a font issue with buttons that have the BS_OWNERDRAW
style. It's necessary to select the font set by WM_SETFONT into the
device context before WM_DRAWITEM is sent. Windows does this too: It's
undocumented, but some custom controls (e.g. CButtonST) rely on this.

The other controls that support owner draw styles (combo box, list box,
menu) already do this correctly.

Changelog:

* controls/button.c:
   Use correct font for ownerdraw buttons


diff -u -r1.72 button.c
--- controls/button.c    16 Aug 2004 20:00:41 -0000    1.72
+++ controls/button.c    16 Aug 2004 20:51:45 -0000
@@ -1035,6 +1035,7 @@
    RECT clipRect;
    UINT id = GetWindowLongA( hwnd, GWL_ID );
    HWND parent;
+    HFONT hPrevFont;

    dis.CtlType    = ODT_BUTTON;
    dis.CtlID      = id;
@@ -1058,9 +1059,11 @@
    DPtoLP(hDC, (LPPOINT) &clipRect, 2);
    IntersectClipRect(hDC, clipRect.left,  clipRect.top, clipRect.right, clipRect.bottom);

+    hPrevFont = (get_button_font(hwnd)) ? SelectObject(hDC, get_button_font(hwnd)) : 0;
    parent = GetParent(hwnd);
    if (!parent) parent = hwnd;
    SendMessageW( parent, WM_CTLCOLORBTN, (WPARAM)hDC, (LPARAM)hwnd );
    SendMessageW( GetParent(hwnd), WM_DRAWITEM, id, (LPARAM)&dis );
+    if (hPrevFont) SelectObject(hDC, hPrevFont);
    SelectClipRgn(hDC, clipRegion);
}