cleanup - reformatting; simplified OnPaint

[wxWidgets.git] / src / msw / datectrl.cpp

diff --git a/src/msw/datectrl.cpp b/src/msw/datectrl.cpp
index 71ba127e719ab3f731262d69bc8c24ad3d30a37f..ec84f53d880bfd17498ccb9761086402216d0ef8 100644 (file)
--- a/src/msw/datectrl.cpp
+++ b/src/msw/datectrl.cpp
@@ -40,15 +40,17 @@
 #include "wx/msw/wrapcctl.h"
 #include "wx/msw/private.h"
 
-#if defined(__GNUWIN32__) && ! wxCHECK_W32API_VERSION( 2, 4 )
-typedef struct tagNMDATETIMECHANGE
-{
-    NMHDR       nmhdr;
-    DWORD       dwFlags;
-    SYSTEMTIME  st;
-} NMDATETIMECHANGE, FAR * LPNMDATETIMECHANGE;
+// apparently some versions of mingw define these macros erroneously
+#ifndef DateTime_GetSystemtime
+    #define DateTime_GetSystemtime DateTime_GetSystemTime
+#endif
+
+#ifndef DateTime_SetSystemtime
+    #define DateTime_SetSystemtime DateTime_SetSystemTime
 #endif
 
+IMPLEMENT_DYNAMIC_CLASS(wxDatePickerCtrl, wxControl)
+
 // ============================================================================
 // implementation
 // ============================================================================
@@ -98,17 +100,18 @@ wxDatePickerCtrl::Create(wxWindow *parent,
     // supposed to initialize all common controls, in comctl32.dll 4.72 (and
     // presumably earlier versions 4.70 and 4.71, date time picker not being
     // supported in < 4.70 anyhow) it does not do it and we have to initialize
-    // it explicitely
+    // it explicitly
     static bool s_initDone = false; // MT-ok: used from GUI thread only
     if ( !s_initDone )
     {
-        if ( wxTheApp->GetComCtl32Version() < 470 )
+        if ( wxApp::GetComCtl32Version() < 470 )
         {
             wxLogError(_("This system doesn't support date picker control, please upgrade your version of comctl32.dll"));
 
             return false;
         }
 
+#if wxUSE_DYNLIB_CLASS
         INITCOMMONCONTROLSEX icex;
         icex.dwSize = sizeof(icex);
         icex.dwICC = ICC_DATE_CLASSES;
@@ -124,6 +127,7 @@ wxDatePickerCtrl::Create(wxWindow *parent,
         }
 
         s_initDone = true;
+#endif        
     }
 
 
@@ -136,10 +140,10 @@ wxDatePickerCtrl::Create(wxWindow *parent,
         return false;
 
     // create the native control
-    if ( !MSWCreateControl(DATETIMEPICK_CLASS, _T(""), pos, size) )
+    if ( !MSWCreateControl(DATETIMEPICK_CLASS, wxEmptyString, pos, size) )
         return false;
 
-    if ( dt.IsValid() )
+    if ( dt.IsValid() || (style & wxDP_ALLOWNONE) )
         SetValue(dt);
 
     return true;
@@ -151,7 +155,7 @@ WXDWORD wxDatePickerCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 
     // although MSDN doesn't mention it, DTS_UPDOWN doesn't work with
     // comctl32.dll 4.72
-    if ( wxTheApp->GetComCtl32Version() > 472 && (style & wxDP_SPIN) )
+    if ( wxApp::GetComCtl32Version() > 472 && (style & wxDP_SPIN) )
         styleMSW |= DTS_UPDOWN;
     //else: drop down by default
 
@@ -162,6 +166,9 @@ WXDWORD wxDatePickerCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 #endif // DTS_SHORTDATECENTURYFORMAT
         styleMSW |= DTS_SHORTDATEFORMAT;
 
+    if ( style & wxDP_ALLOWNONE )
+        styleMSW |= DTS_SHOWNONE;
+
     return styleMSW;
 }
 
@@ -175,31 +182,26 @@ wxSize wxDatePickerCtrl::DoGetBestSize() const
 {
     const int y = GetCharHeight();
 
-    return wxSize(DEFAULT_ITEM_WIDTH, EDIT_HEIGHT_FROM_CHAR_HEIGHT(y));
+    wxSize best(DEFAULT_ITEM_WIDTH, EDIT_HEIGHT_FROM_CHAR_HEIGHT(y));
+    CacheBestSize(best);
+    return best;
 }
 
 // ----------------------------------------------------------------------------
 // wxDatePickerCtrl operations
 // ----------------------------------------------------------------------------
 
-#ifndef DateTime_GetSystemtime
-    #define DateTime_GetSystemtime DateTime_GetSystemTime
-#endif
-
-#ifndef DateTime_SetSystemtime
-    #define DateTime_SetSystemtime DateTime_SetSystemTime
-#endif
-
 void wxDatePickerCtrl::SetValue(const wxDateTime& dt)
 {
-    // as we don't support DTS_SHOWNONE style so far, we don't allow setting
-    // the control to an invalid date, but this restriction may be lifted in
-    // the future
-    wxCHECK_RET( dt.IsValid(), _T("invalid date") );
+    wxCHECK_RET( dt.IsValid() || HasFlag(wxDP_ALLOWNONE),
+                    _T("this control requires a valid date") );
 
     SYSTEMTIME st;
-    wxToSystemTime(&st, dt);
-    if ( !DateTime_SetSystemtime(GetHwnd(), GDT_VALID, &st) )
+    if ( dt.IsValid() )
+        wxToSystemTime(&st, dt);
+    if ( !DateTime_SetSystemtime(GetHwnd(),
+                                 dt.IsValid() ? GDT_VALID : GDT_NONE,
+                                 &st) )
     {
         wxLogDebug(_T("DateTime_SetSystemtime() failed"));
     }