Remove ugly flicker during resizing

[wxWidgets.git] / samples / oleauto / oleauto.cpp

diff --git a/samples/oleauto/oleauto.cpp b/samples/oleauto/oleauto.cpp
index 9d1fe96853127dfb3584cfd50932c25a502d9f05..f803eaf7c085cda8ebc02f9469acfb6388e8e65d 100644 (file)
--- a/samples/oleauto/oleauto.cpp
+++ b/samples/oleauto/oleauto.cpp
@@ -30,7 +30,7 @@
     #include "wx/wx.h"
 #endif
 
-#include <wx/msw/ole/automtn.h>
+#include "wx/msw/ole/automtn.h"
 
 #ifndef __WXMSW__
 #error "Sorry, this sample works under Windows only."
@@ -91,7 +91,7 @@ enum
     OleAuto_Test,
 
     // controls start here (the numbers are, of course, arbitrary)
-    OleAuto_Text = 1000,
+    OleAuto_Text = 1000
 };
 
 // ----------------------------------------------------------------------------
@@ -125,6 +125,9 @@ IMPLEMENT_APP(MyApp)
 // `Main program' equivalent: the program execution "starts" here
 bool MyApp::OnInit()
 {
+    if ( !wxApp::OnInit() )
+        return false;
+
     // Create the main application window
     MyFrame *frame = new MyFrame(_T("OleAuto wxWidgets App"),
                                  wxPoint(50, 50), wxSize(450, 340));
@@ -198,12 +201,36 @@ void MyFrame::OnTest(wxCommandEvent& WXUNUSED(event))
     wxAutomationObject excelObject, rangeObject;
     if (!excelObject.GetInstance(_T("Excel.Application")))
     {
+        // Start Excel if it is not running
         if (!excelObject.CreateInstance(_T("Excel.Application")))
         {
             wxMessageBox(_T("Could not create Excel object."));
             return;
         }
     }
+
+    // Ensure that Excel is visible
+    if (!excelObject.PutProperty(_T("Visible"), true))
+    {
+        wxMessageBox(_T("Could not make Excel object visible"));
+    }
+    const wxVariant workbooksCountVariant = excelObject.GetProperty(_T("Workbooks.Count"));
+    if (workbooksCountVariant.IsNull())
+    {
+        wxMessageBox(_T("Could not get workbooks count"));
+        return;
+    }
+    const long workbooksCount = workbooksCountVariant;
+    if (workbooksCount == 0)
+    {
+        const wxVariant workbook = excelObject.CallMethod(_T("Workbooks.Add"));
+        if (workbook.IsNull())
+        {
+            wxMessageBox(_T("Could not create new Workbook"));
+            return;
+        }
+    }
+
     if (!excelObject.PutProperty(_T("ActiveCell.Value"), _T("wxWidgets automation test!")))
     {
         wxMessageBox(_T("Could not set active cell value."));
@@ -215,4 +242,3 @@ void MyFrame::OnTest(wxCommandEvent& WXUNUSED(event))
         return;
     }
 }
-