Louis-Philippe Gagnon (of Macadamian for Corel) Static controls weren't receiving WM_LBUTTONDBLCLK messages because the Static window class was registered without the CS_DBLCLKS style (which it has in Windows).

diff --git a/controls/widgets.c b/controls/widgets.c
index 26d98ab..2eabec4 100644
--- a/controls/widgets.c
+++ b/controls/widgets.c

@@ -46,7 +46,7 @@
     { CS_GLOBALCLASS | CS_SAVEBITS, PopupMenuWndProc, 0, sizeof(HMENU),
       0, 0, (HCURSOR)IDC_ARROWA, NULL_BRUSH, 0, POPUPMENU_CLASS_NAME },
     /* BIC32_STATIC */
-    { CS_GLOBALCLASS | CS_PARENTDC, StaticWndProc,
+    { CS_GLOBALCLASS | CS_DBLCLKS | CS_PARENTDC, StaticWndProc,
       0, sizeof(STATICINFO), 0, 0, (HCURSOR)IDC_ARROWA, 0, 0, "Static" },
     /* BIC32_SCROLL */
     { CS_GLOBALCLASS | CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW | CS_PARENTDC,