01/01: [MAGNIFY] Fix the magnification ratio bug for CORE-14946 (#823)

[LuRenJia]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=85bbd69caee7087f93e88e...

commit 85bbd69caee7087f93e88ed81c7f18fa3dac48d1
Author:     LuRenJia [e-mail]
AuthorDate: Mon Aug 27 20:36:28 2018 +0800
Commit:     Hermès BÉLUSCA - MAÏTO [e-mail]
CommitDate: Mon Aug 27 14:36:28 2018 +0200

[MAGNIFY] Fix the magnification ratio bug for CORE-14946 (#823)

This bug was caused by leaving the magnify window unrefreshed when updating the "Magnification Level" ComboBox.
    CORE-14946
---
 base/applications/magnify/magnifier.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/base/applications/magnify/magnifier.c b/base/applications/magnify/magnifier.c
index 057942eda2..f8d63cfce4 100644
--- a/base/applications/magnify/magnifier.c
+++ b/base/applications/magnify/magnifier.c
@@ -18,6 +18,8 @@
 #include <winnls.h>
 #include <shellapi.h>
 #include <windowsx.h>
+#include <stdlib.h>
+#include <tchar.h>

#include "resource.h"

@@ -923,9 +925,15 @@ INT_PTR CALLBACK OptionsProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lPar
                 if (HIWORD(wParam) == CBN_SELCHANGE)
                 {
                     HWND hCombo = GetDlgItem(hDlg,IDC_ZOOM);
+                    LPCTSTR currentZoomValue = TEXT("");

/* Get index of current selection and the text of that selection */
-                    iZoom = SendMessage( hCombo, CB_GETCURSEL, (WPARAM) wParam, (LPARAM) lParam ) + 1;
+                    int currentSelectionIndex = ComboBox_GetCurSel(hCombo);  
+                    ComboBox_GetLBText(hCombo, currentSelectionIndex, currentZoomValue);
+                    iZoom = _ttoi(currentZoomValue);
+
+                    /* Trigger the Draw function to rezoom (which will be set false automatically after rezooming) */
+                    bRecreateOffscreenDC = TRUE;

/* Update the magnifier UI */
                     Refresh();