[reactos] 01/01: [USER32] Make App Switcher use the owner window's icon (#1299)

[Katayama Hirofumi MZ]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=484943d04f0dc3f84b7c8…

commit 484943d04f0dc3f84b7c8e754d1d2505f0a41df3
Author:     Katayama Hirofumi MZ <katayama.hirofumi.mz(a)gmail.com>
AuthorDate: Thu Jan 24 22:41:42 2019 +0900
Commit:     GitHub <noreply(a)github.com>
CommitDate: Thu Jan 24 22:41:42 2019 +0900

    [USER32] Make App Switcher use the owner window's icon (#1299)
    
    CORE-15672
---
 win32ss/user/user32/controls/appswitch.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/win32ss/user/user32/controls/appswitch.c
b/win32ss/user/user32/controls/appswitch.c
index 7f97d0dfac..ecd48b47e7 100644
--- a/win32ss/user/user32/controls/appswitch.c
+++ b/win32ss/user/user32/controls/appswitch.c
@@ -165,20 +165,24 @@ void CompleteSwitch(BOOL doSwitch)
 BOOL CALLBACK EnumerateCallback(HWND window, LPARAM lParam)
 {
    HICON hIcon;
+   HWND hwndIcon, hwndOwner;
 
    UNREFERENCED_PARAMETER(lParam);
 
+   hwndOwner = GetWindow(window, GW_OWNER);
+   hwndIcon = (hwndOwner ? hwndOwner : window);
+
    // First try to get the big icon assigned to the window
-   hIcon = (HICON)SendMessageW(window, WM_GETICON, ICON_BIG, 0);
+   hIcon = (HICON)SendMessageW(hwndIcon, WM_GETICON, ICON_BIG, 0);
    if (!hIcon)
    {
       // If no icon is assigned, try to get the icon assigned to the windows' class
-      hIcon = (HICON)GetClassLongPtrW(window, GCL_HICON);
+      hIcon = (HICON)GetClassLongPtrW(hwndIcon, GCL_HICON);
       if (!hIcon)
       {
          // If we still don't have an icon, see if we can do with the small icon,
          // or a default application icon
-         hIcon = (HICON)SendMessageW(window, WM_GETICON, ICON_SMALL2, 0);
+         hIcon = (HICON)SendMessageW(hwndIcon, WM_GETICON, ICON_SMALL2, 0);
          if (!hIcon)
          {
             // using windows logo icon as default