[reactos] 01/01: [UXTHEME] Properly show disabled close button

[Stanislav Motylkov]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=685084b63c74f7113883d7...

commit 685084b63c74f7113883d748bdbbba0c26fe06b2
Author:     Stanislav Motylkov [e-mail]
AuthorDate: Sun Aug 16 17:34:38 2020 +0300
Commit:     Stanislav Motylkov [e-mail]
CommitDate: Sun Aug 16 17:34:38 2020 +0300

[UXTHEME] Properly show disabled close button

CORE-17203
---
 dll/win32/uxtheme/nonclient.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/dll/win32/uxtheme/nonclient.c b/dll/win32/uxtheme/nonclient.c
index 1ff26a32184..e48b5ac693a 100644
--- a/dll/win32/uxtheme/nonclient.c
+++ b/dll/win32/uxtheme/nonclient.c
@@ -277,6 +277,8 @@ ThemeDrawCaptionButton(PDRAW_CONTEXT pcontext,
                        INT iStateId)
 {
     INT iPartId;
+    HMENU SysMenu;
+    UINT MenuState;
     PWND_DATA pwndData = ThemeGetWndData(pcontext->hWnd);
     if (!pwndData)
         return;
@@ -284,6 +286,13 @@ ThemeDrawCaptionButton(PDRAW_CONTEXT pcontext,
     switch(buttonId)
     {
     case CLOSEBUTTON:
+        SysMenu = GetSystemMenu(pcontext->hWnd, FALSE);
+        MenuState = GetMenuState(SysMenu, SC_CLOSE, MF_BYCOMMAND);
+        if (!(pcontext->wi.dwStyle & WS_SYSMENU) || (MenuState & (MF_GRAYED | MF_DISABLED)) || pcontext->wi.dwStyle & CS_NOCLOSE)
+        {
+            iStateId = (pcontext->Active ? BUTTON_DISABLED : BUTTON_INACTIVE_DISABLED);
+        }
+
         iPartId = pcontext->wi.dwExStyle & WS_EX_TOOLWINDOW ? WP_SMALLCLOSEBUTTON : WP_CLOSEBUTTON;
         break;