[PATCH v3 1/1] comctl32/listview: Ignore the lParam to WM_PRINTCLIENT and add tests.

[Alex Henrie]

From: Alex Henrie

Based on simliar patch for comctl32/treeview: 231199bc46

WM_PRINTCLIENT paints the items of a listview, including the item
backgrounds, but never the listview background.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54878
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55005
Co-authored-by: Bernhard Übelacker 
---
 dlls/comctl32/listview.c       | 12 +----
 dlls/comctl32/tests/listview.c | 81 +++++++++++++++++++++++++++++++---
 2 files changed, 78 insertions(+), 15 deletions(-)

diff --git a/dlls/comctl32/listview.c b/dlls/comctl32/listview.c
index 7972be9669d..c82473b6205 100644
--- a/dlls/comctl32/listview.c
+++ b/dlls/comctl32/listview.c
@@ -10832,17 +10832,9 @@ static inline LRESULT LISTVIEW_WMPaint(LISTVIEW_INFO *infoPtr, HDC hdc)
  */
 static LRESULT LISTVIEW_PrintClient(LISTVIEW_INFO *infoPtr, HDC hdc, DWORD options)
 {
-    if ((options & PRF_CHECKVISIBLE) && !IsWindowVisible(infoPtr->hwndSelf))
-        return 0;
-
-    if (options & ~(PRF_ERASEBKGND|PRF_CLIENT))
-        FIXME("(hdc=%p options %#lx) partial stub\n", hdc, options);
-
-    if (options & PRF_ERASEBKGND)
-        LISTVIEW_EraseBkgnd(infoPtr, hdc);
+    FIXME("(hdc=%p options=%#lx) partial stub\n", hdc, options);

-    if (options & PRF_CLIENT)
-        LISTVIEW_Paint(infoPtr, hdc);
+    LISTVIEW_Paint(infoPtr, hdc);

return 0;
 }
diff --git a/dlls/comctl32/tests/listview.c b/dlls/comctl32/tests/listview.c
index b1cb0ef16c2..0ab5a7d0ce7 100644
--- a/dlls/comctl32/tests/listview.c
+++ b/dlls/comctl32/tests/listview.c
@@ -24,11 +24,16 @@
 #include <windows.h>
 #include <commctrl.h>
 #include <objbase.h>
+#include <uxtheme.h>
+#include <vsstyle.h>

#include "wine/test.h"
 #include "v6util.h"
 #include "msg.h"

+static HTHEME (WINAPI *pGetWindowTheme)(HWND);
+static BOOL (WINAPI *pIsThemeBackgroundPartiallyTransparent)(HTHEME, int, int);
+
 static HIMAGELIST (WINAPI *pImageList_Create)(int, int, UINT, int, int);
 static BOOL (WINAPI *pImageList_Destroy)(HIMAGELIST);
 static int (WINAPI *pImageList_Add)(HIMAGELIST, HBITMAP, HBITMAP);
@@ -90,12 +95,16 @@ static HWND subclass_editbox(HWND hwndListview);
 static void init_functions(void)
 {
     HMODULE hComCtl32 = LoadLibraryA("comctl32.dll");
+    HMODULE hUxtheme = LoadLibraryA("uxtheme.dll");
+
+#define X(module, f) p##f = (void*)GetProcAddress(module, #f);
+    X(hComCtl32, ImageList_Create);
+    X(hComCtl32, ImageList_Destroy);
+    X(hComCtl32, ImageList_Add);
+    X(hComCtl32, _TrackMouseEvent);

-#define X(f) p##f = (void*)GetProcAddress(hComCtl32, #f);
-    X(ImageList_Create);
-    X(ImageList_Destroy);
-    X(ImageList_Add);
-    X(_TrackMouseEvent);
+    X(hUxtheme, GetWindowTheme);
+    X(hUxtheme, IsThemeBackgroundPartiallyTransparent);
 #undef X
 }

@@ -5978,6 +5987,66 @@ static void test_LVM_REDRAWITEMS(void)
     DestroyWindow(list);
 }

+static void test_WM_PRINTCLIENT(void)
+{
+    static const int states[] = {SW_HIDE, SW_SHOW};
+    static const LPARAM params[] = {0, PRF_CHECKVISIBLE, PRF_NONCLIENT, PRF_CLIENT, PRF_ERASEBKGND,
+                                    PRF_CHILDREN, PRF_OWNED};
+    const DWORD list_background = RGB(255, 0, 0);
+    const DWORD text_background = RGB(0, 0, 255);
+    BOOL listitem_is_transparent;
+    HTHEME hTheme;
+    HWND hList;
+    COLORREF clr;
+    LONG ret;
+    RECT rc;
+    HDC hdc;
+    int i, j;
+
+    hList = create_listview_control(LVS_LIST);
+    insert_item(hList, 0);
+
+    ret = SendMessageA(hList, LVM_SETBKCOLOR, 0, list_background);
+    ok(ret == TRUE, "got 0x%lx, expected 0x%x\n", ret, TRUE);
+
+    ret = SendMessageA(hList, LVM_SETTEXTBKCOLOR, 0, text_background);
+    ok(ret == TRUE, "got 0x%lx, expected 0x%x\n", ret, TRUE);
+
+    hdc = GetDC(hwndparent);
+    GetClientRect(hwndparent, &rc);
+
+    hTheme = pGetWindowTheme(hList);
+    listitem_is_transparent = hTheme && pIsThemeBackgroundPartiallyTransparent(hTheme, LVP_LISTITEM, 0);
+
+    for (i = 0; i < ARRAY_SIZE(states); i++)
+    {
+        ShowWindow(hList, states[i]);
+
+        for (j = 0; j < ARRAY_SIZE(params); j++)
+        {
+            winetest_push_context("state=%d lParam=0x%Ix", states[i], params[j]);
+
+            FillRect(hdc, &rc, GetStockObject(BLACK_BRUSH));
+            clr = GetPixel(hdc, 1, 1);
+            ok(clr == RGB(0, 0, 0), "got 0x%lx\n", clr);
+            clr = GetPixel(hdc, 50, 1);
+            ok(clr == RGB(0, 0, 0), "got 0x%lx\n", clr);
+            ret = SendMessageA(hList, WM_PRINTCLIENT, (WPARAM)hdc, params[j]);
+            ok(ret == 0, "got %ld\n", ret);
+            clr = GetPixel(hdc, 1, 1);
+            ok(clr == text_background || (listitem_is_transparent && clr == list_background),
+               "got 0x%lx\n", clr);
+            clr = GetPixel(hdc, 50, 1);
+            ok(clr == RGB(0, 0, 0), "got 0x%lx\n", clr);
+
+            winetest_pop_context();
+        }
+    }
+
+    ReleaseDC(hwndparent, hdc);
+    DestroyWindow(hList);
+}
+
 static void test_imagelists(void)
 {
     HWND hwnd, header;
@@ -7153,6 +7222,7 @@ START_TEST(listview)
     test_dispinfo();
     test_LVM_SETITEMTEXT();
     test_LVM_REDRAWITEMS();
+    test_WM_PRINTCLIENT();
     test_imagelists();
     test_deleteitem();
     test_insertitem();
@@ -7205,6 +7275,7 @@ START_TEST(listview)
     test_dispinfo();
     test_LVM_SETITEMTEXT();
     test_LVM_REDRAWITEMS();
+    test_WM_PRINTCLIENT();
     test_oneclickactivate();
     test_state_image();
     test_LVSCW_AUTOSIZE();