public static bool NeedsComponentEditor(object obj) {
if (obj is NativeMethods.IPerPropertyBrowsing) {
// check for a property page
Guid guid = Guid.Empty;
int hr = ((NativeMethods.IPerPropertyBrowsing)obj).MapPropertyToPage(NativeMethods.MEMBERID_NIL, out guid);
if ((hr == NativeMethods.S_OK) && !guid.Equals(Guid.Empty)) {
return true;
}
}
if (obj is NativeMethods.ISpecifyPropertyPages) {
try {
NativeMethods.tagCAUUID uuids = new NativeMethods.tagCAUUID();
try {
((NativeMethods.ISpecifyPropertyPages)obj).GetPages(uuids);
if (uuids.cElems > 0) {
return true;
}
}
finally {
if (uuids.pElems != IntPtr.Zero) {
Marshal.FreeCoTaskMem(uuids.pElems);
}
}
}
catch {
}
return false;
}
return false;
}
public static bool NeedsComponentEditor(object obj)
{
if (obj is NativeMethods.IPerPropertyBrowsing)
{
// check for a property page
Guid guid = Guid.Empty;
int hr = ((NativeMethods.IPerPropertyBrowsing)obj).MapPropertyToPage(NativeMethods.MEMBERID_NIL, out guid);
if ((hr == NativeMethods.S_OK) && !guid.Equals(Guid.Empty))
{
return(true);
}
}
if (obj is NativeMethods.ISpecifyPropertyPages)
{
try
{
NativeMethods.tagCAUUID uuids = new NativeMethods.tagCAUUID();
try
{
((NativeMethods.ISpecifyPropertyPages)obj).GetPages(uuids);
if (uuids.cElems > 0)
{
return(true);
}
}
finally
{
if (uuids.pElems != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(uuids.pElems);
}
}
}
catch
{
}
return(false);
}
return(false);
}
public override bool EditComponent(ITypeDescriptorContext context, object obj, IWin32Window parent)
{
IntPtr handle = (parent == null ? IntPtr.Zero : parent.Handle);
// try to get the page guid
if (obj is NativeMethods.IPerPropertyBrowsing)
{
// check for a property page
Guid guid = Guid.Empty;
int hr = ((NativeMethods.IPerPropertyBrowsing)obj).MapPropertyToPage(NativeMethods.MEMBERID_NIL, out guid);
if (hr == NativeMethods.S_OK)
{
if (!guid.Equals(Guid.Empty))
{
object o = obj;
SafeNativeMethods.OleCreatePropertyFrame(new HandleRef(parent, handle), 0, 0, "PropertyPages", 1, ref o, 1, new Guid[] { guid }, Application.CurrentCulture.LCID, 0, IntPtr.Zero);
return(true);
}
}
}
if (obj is NativeMethods.ISpecifyPropertyPages)
{
bool failed = false;
Exception failureException;
try {
NativeMethods.tagCAUUID uuids = new NativeMethods.tagCAUUID();
try {
((NativeMethods.ISpecifyPropertyPages)obj).GetPages(uuids);
if (uuids.cElems <= 0)
{
return(false);
}
}
catch {
return(false);
}
try {
object o = obj;
SafeNativeMethods.OleCreatePropertyFrame(new HandleRef(parent, handle), 0, 0, "PropertyPages", 1, ref o, uuids.cElems, new HandleRef(uuids, uuids.pElems), Application.CurrentCulture.LCID, 0, IntPtr.Zero);
return(true);
}
finally {
if (uuids.pElems != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(uuids.pElems);
}
}
}
catch (Exception ex1) {
failed = true;
failureException = ex1;
}
if (failed)
{
string errString = SR.ErrorPropertyPageFailed;
IUIService uiSvc = (context != null) ? ((IUIService)context.GetService(typeof(IUIService))) : null;
if (uiSvc == null)
{
RTLAwareMessageBox.Show(null, errString, SR.PropertyGridTitle,
MessageBoxButtons.OK, MessageBoxIcon.Error,
MessageBoxDefaultButton.Button1, 0);
}
else if (failureException != null)
{
uiSvc.ShowError(failureException, errString);
}
else
{
uiSvc.ShowError(errString);
}
}
}
return(false);
}
public override bool EditComponent(ITypeDescriptorContext context, object obj, IWin32Window parent) {
IntPtr handle = (parent == null ? IntPtr.Zero : parent.Handle);
// try to get the page guid
if (obj is NativeMethods.IPerPropertyBrowsing) {
// check for a property page
Guid guid = Guid.Empty;
int hr = ((NativeMethods.IPerPropertyBrowsing)obj).MapPropertyToPage(NativeMethods.MEMBERID_NIL, out guid);
if (hr == NativeMethods.S_OK) {
if (!guid.Equals(Guid.Empty)) {
object o = obj;
SafeNativeMethods.OleCreatePropertyFrame(new HandleRef(parent, handle), 0, 0, "PropertyPages", 1, ref o, 1, new Guid[]{guid}, Application.CurrentCulture.LCID, 0, IntPtr.Zero);
return true;
}
}
}
if (obj is NativeMethods.ISpecifyPropertyPages) {
bool failed = false;
Exception failureException;
try {
NativeMethods.tagCAUUID uuids = new NativeMethods.tagCAUUID();
try {
((NativeMethods.ISpecifyPropertyPages)obj).GetPages(uuids);
if (uuids.cElems <= 0) {
return false;
}
}
catch {
return false;
}
try {
object o = obj;
SafeNativeMethods.OleCreatePropertyFrame(new HandleRef(parent, handle), 0, 0, "PropertyPages", 1, ref o, uuids.cElems, new HandleRef(uuids, uuids.pElems), Application.CurrentCulture.LCID, 0, IntPtr.Zero);
return true;
}
finally {
if (uuids.pElems != IntPtr.Zero) {
Marshal.FreeCoTaskMem(uuids.pElems);
}
}
}
catch (Exception ex1) {
failed = true;
failureException = ex1;
}
if (failed) {
String errString = SR.GetString(SR.ErrorPropertyPageFailed);
IUIService uiSvc = (context != null) ? ((IUIService) context.GetService(typeof(IUIService))) : null;
if (uiSvc == null) {
RTLAwareMessageBox.Show(null, errString, SR.GetString(SR.PropertyGridTitle),
MessageBoxButtons.OK, MessageBoxIcon.Error,
MessageBoxDefaultButton.Button1, 0);
}
else if (failureException != null) {
uiSvc.ShowError(failureException, errString);
}
else {
uiSvc.ShowError(errString);
}
}
}
return false;
}
