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richedit: Empty text should result in a scroll range of 0. Tests for this behavior.

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This commit is contained in:
Alex Villacís Lasso 2008-05-11 09:54:58 -05:00 committed by Alexandre Julliard
parent c7873afbb2
commit 0e9ed5c10e
2 changed files with 19 additions and 4 deletions
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11
dlls/riched20/paint.c
View File

@ -674,9 +674,14 @@ void ME_Scroll(ME_TextEditor *editor, int value, int type)
si.fMask |= SIF_DISABLENOSCROLL;
si.nMin = 0;
si.nMax = editor->nTotalLength;
si.nPage = editor->sizeWindow.cy;
if (ME_GetTextLength(editor) > 0)
{
si.nMax = editor->nTotalLength;
si.nPage = editor->sizeWindow.cy;
} else {
si.nMax = si.nPage = 0;
}
TRACE("min=%d max=%d page=%d\n", si.nMin, si.nMax, si.nPage);
SetScrollInfo(hWnd, SB_VERT, &si, TRUE);

12
dlls/riched20/tests/editor.c
View File

@ -1921,6 +1921,16 @@ static void test_EM_SCROLL(void)
int expr; /* expected return value */
HWND hwndRichEdit = new_richedit(NULL);
int y_before, y_after; /* units of lines of text */
SCROLLINFO si;
/* Empty richedit should have scroll range of 0 */
si.cbSize = sizeof(si);
si.fMask = SIF_RANGE | SIF_PAGE | SIF_POS;
GetScrollInfo(hwndRichEdit, SB_VERT, &si);
ok(si.nMin == 0, "si.nMin == %d, expected 0\n", si.nMin);
ok(si.nMax == 0, "si.nMax == %d, expected 0\n", si.nMax);
ok(si.nPos == 0, "si.nPos == %d, expected 0\n", si.nPos);
ok(si.nPage == 0, "si.nPage == %d, expected 0\n", si.nPage);
/* test a richedit box containing a single line of text */
SendMessage(hwndRichEdit, WM_SETTEXT, 0, (LPARAM) "a");/* one line of text */
@ -4181,7 +4191,6 @@ START_TEST( editor )
test_EM_GETMODIFY();
test_EM_EXSETSEL();
test_WM_PASTE();
test_EM_AUTOURLDETECT();
test_EM_STREAMIN();
test_EM_STREAMOUT();
test_EM_StreamIn_Undo();
@ -4191,6 +4200,7 @@ START_TEST( editor )
test_EM_REPLACESEL(1);
test_EM_REPLACESEL(0);
test_WM_NOTIFY();
test_EM_AUTOURLDETECT();
test_eventMask();
/* Set the environment variable WINETEST_RICHED20 to keep windows