[PATCH 1/1] ieframe: Forward WM_PAINT messages to the document host and all its child windows.

[Torge Matthies]

From: Torge Matthies

Windows gives this content special protection from being painted over, by some means that I have not investigated yet.
Emulate this protection for the trivial case of an InvalidateRect(...); call on the parent window.

Signed-off-by: Torge Matthies 
---
 dlls/ieframe/dochost.c   | 8 ++++++++
 dlls/ieframe/iexplore.c  | 6 ++++++
 dlls/ieframe/oleobject.c | 6 ++++++
 3 files changed, 20 insertions(+)

diff --git a/dlls/ieframe/dochost.c b/dlls/ieframe/dochost.c
index 97b86d481b9..c07d7977c28 100644
--- a/dlls/ieframe/dochost.c
+++ b/dlls/ieframe/dochost.c
@@ -377,6 +377,14 @@ static LRESULT WINAPI doc_view_proc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM l
     switch(msg) {
     case WM_SIZE:
         return resize_document(This, LOWORD(lParam), HIWORD(lParam));
+    case WM_PAINT:
+    {
+        LRESULT ret = DefWindowProcW(hwnd, msg, wParam, lParam);
+        HWND child = NULL;
+        while ((child = FindWindowExW(hwnd, child, NULL, NULL)))
+            RedrawWindow(child, NULL, 0, RDW_INVALIDATE | RDW_ERASE | RDW_ALLCHILDREN);
+        return ret;
+    }
     }

return DefWindowProcW(hwnd, msg, wParam, lParam);
diff --git a/dlls/ieframe/iexplore.c b/dlls/ieframe/iexplore.c
index acf7a18e3f3..2d835defc64 100644
--- a/dlls/ieframe/iexplore.c
+++ b/dlls/ieframe/iexplore.c
@@ -693,6 +693,12 @@ static LRESULT WINAPI ie_window_proc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM
         return process_dochost_tasks(&This->doc_host);
     case WM_UPDATEADDRBAR:
         return update_addrbar(This, lparam);
+    case WM_PAINT:
+    {
+        LRESULT ret = DefWindowProcW(hwnd, msg, wparam, lparam);
+        InvalidateRect(This->doc_host.hwnd, NULL, TRUE);
+        return ret;
+    }
     }
     return DefWindowProcW(hwnd, msg, wparam, lparam);
 }
diff --git a/dlls/ieframe/oleobject.c b/dlls/ieframe/oleobject.c
index 742e78ce4e4..ae0a240c378 100644
--- a/dlls/ieframe/oleobject.c
+++ b/dlls/ieframe/oleobject.c
@@ -89,6 +89,12 @@ static LRESULT WINAPI shell_embedding_proc(HWND hwnd, UINT msg, WPARAM wParam, L
     case WM_KILLFOCUS:
         notify_on_focus(This, FALSE);
         break;
+    case WM_PAINT:
+    {
+        LRESULT ret = DefWindowProcW(hwnd, msg, wParam, lParam);
+        InvalidateRect(This->doc_host.hwnd, NULL, TRUE);
+        return ret;
+    }
     }

return DefWindowProcW(hwnd, msg, wParam, lParam);