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Ensure there is valid context for DrawRectangle
[wxWidgets.git] / src / msw / clipbrd.cpp
diff --git a/src/msw/clipbrd.cpp b/src/msw/clipbrd.cpp
index b9df0c276755db21ee7645270ac8971eeda795d3..bd929dcac3fe3168d363439b49e2de783f86f3ee 100644 (file)
--- a/src/msw/clipbrd.cpp
+++ b/src/msw/clipbrd.cpp
@@ -79,6 +79,7 @@
 // ---------------------------------------------------------------------------
 
 static bool gs_wxClipboardIsOpen = false;
+static int gs_htmlcfid = 0;
 
 bool wxOpenClipboard()
 {
@@ -90,13 +91,15 @@ bool wxOpenClipboard()
         gs_wxClipboardIsOpen = ::OpenClipboard((HWND)win->GetHWND()) != 0;
 
         if ( !gs_wxClipboardIsOpen )
+        {
             wxLogSysError(_("Failed to open the clipboard."));
+        }
 
         return gs_wxClipboardIsOpen;
     }
     else
     {
-        wxLogDebug(wxT("Can not open clipboard without a main window."));
+        wxLogDebug(wxT("Cannot open clipboard without a main window."));
 
         return false;
     }
@@ -137,7 +140,9 @@ bool wxIsClipboardOpened()
 
 bool wxIsClipboardFormatAvailable(wxDataFormat dataFormat)
 {
-   wxDataFormat::NativeFormat cf = dataFormat.GetFormatId();
+    wxDataFormat::NativeFormat cf = dataFormat.GetFormatId();
+    if (cf == wxDF_HTML)
+        cf = gs_htmlcfid;
 
     if ( ::IsClipboardFormatAvailable(cf) )
     {
@@ -212,7 +217,7 @@ bool wxSetClipboardData(wxDataFormat dataFormat,
             {
                 wxBitmap *bitmap = (wxBitmap *)data;
 
-                if ( bitmap && bitmap->Ok() )
+                if ( bitmap && bitmap->IsOk() )
                 {
                     wxDIB dib(*bitmap);
                     if ( dib.IsOk() )
@@ -302,10 +307,6 @@ bool wxSetClipboardData(wxDataFormat dataFormat,
                 char *buf = new char [400 + strlen(html)];
                 if(!buf) return false;
 
-                // Get clipboard id for HTML format...
-                static int cfid = 0;
-                if(!cfid) cfid = RegisterClipboardFormat(wxT("HTML Format"));
-
                 // Create a template string for the HTML header...
                 strcpy(buf,
                     "Version:0.9\r\n"
@@ -330,19 +331,19 @@ bool wxSetClipboardData(wxDataFormat dataFormat,
                 // string when you overwrite it so you follow up with code to replace
                 // the 0 appended at the end with a '\r'...
                 char *ptr = strstr(buf, "StartHTML");
-                sprintf(ptr+10, "%08u", strstr(buf, "<html>") - buf);
+                sprintf(ptr+10, "%08u", (unsigned)(strstr(buf, "<html>") - buf));
                 *(ptr+10+8) = '\r';
 
                 ptr = strstr(buf, "EndHTML");
-                sprintf(ptr+8, "%08u", strlen(buf));
+                sprintf(ptr+8, "%08u", (unsigned)strlen(buf));
                 *(ptr+8+8) = '\r';
 
                 ptr = strstr(buf, "StartFragment");
-                sprintf(ptr+14, "%08u", strstr(buf, "<!--StartFrag") - buf);
+                sprintf(ptr+14, "%08u", (unsigned)(strstr(buf, "<!--StartFrag") - buf));
                 *(ptr+14+8) = '\r';
 
                 ptr = strstr(buf, "EndFragment");
-                sprintf(ptr+12, "%08u", strstr(buf, "<!--EndFrag") - buf);
+                sprintf(ptr+12, "%08u", (unsigned)(strstr(buf, "<!--EndFrag") - buf));
                 *(ptr+12+8) = '\r';
 
                 // Now you have everything in place ready to put on the
@@ -356,7 +357,7 @@ bool wxSetClipboardData(wxDataFormat dataFormat,
                 strcpy(ptr, buf);
                 GlobalUnlock(hText);
 
-                handle = ::SetClipboardData(cfid, hText);
+                handle = ::SetClipboardData(gs_htmlcfid, hText);
 
                 // Free memory...
                 GlobalFree(hText);
@@ -596,6 +597,10 @@ bool wxClipboard::Flush()
 
 bool wxClipboard::Open()
 {
+    // Get clipboard id for HTML format...
+    if(!gs_htmlcfid)
+        gs_htmlcfid = RegisterClipboardFormat(wxT("HTML Format"));
+
     // OLE opens clipboard for us
     m_isOpened = true;
 #if wxUSE_OLE_CLIPBOARD
@@ -812,6 +817,8 @@ bool wxClipboard::GetData( wxDataObject& data )
         // convert to NativeFormat Id
         cf = formats[n].GetFormatId();
 
+        if (cf == wxDF_HTML)
+            cf = gs_htmlcfid;
         // if the format is not available, try the next one
         // this test includes implicit / sythetic formats
         if ( !::IsClipboardFormatAvailable(cf) )
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