fixup transparent background work and add test in widgetfactory

Win32s bites once again with its 16bit WPARAM

1 files changed, 18 insertions, 0 deletions

diff --git a/alf/alf.cpp b/alf/alf.cpp
index 311c65b..3bf9ae7 100644
--- a/alf/alf.cpp
+++ b/alf/alf.cpp
@@ -439,3 +439,21 @@ ALF_ColorToGdi(ALFColor color)
         return (COLORREF)color;
     }
 }
+
+void
+ALF_InvalidateBackground(HWND win)
+{
+    SendMessage(win, ALF_WM_BACKGROUNDCHANGE, 0, 0);
+}
+
+void
+ALF_SetBackgroundColor(HWND win, ALFColor color)
+{
+    SendMessage(win, ALF_WM_SETBGCOLOR, 0, (LPARAM)color);
+}
+
+ALFColor
+ALF_GetBackgroundColor(HWND win)
+{
+    return (ALFColor)SendMessage(win, ALF_WM_GETBGCOLOR, 0, 0);
+}