| public DoDragDrop ( object data, DragDropEffects allowedEffects ) : DragDropEffects | ||
| data | object | |
| allowedEffects | DragDropEffects | |
| return | DragDropEffects | |
/// <summary>
/// Performs a default drag and drop operation for the specified drag source.
/// </summary>
/// <param name="control">The drag source Control.</param>
/// <param name="dataObject">The data object associated to the drag and drop operation.</param>
/// <param name="allowedEffects">The allowed drop effects.</param>
/// <param name="data">The associated data.</param>
/// <returns>The accepted drop effects from the completed operation.</returns>
private static DragDropEffects DoDragDropInternal(Control control, IDataObject dataObject, DragDropEffects allowedEffects, KeyValuePair <string, object>[] data)
{
// Set the data onto the data object.
if (data != null)
{
foreach (KeyValuePair <string, object> dataPair in data)
{
dataObject.SetDataEx(dataPair.Key, dataPair.Value);
}
}
try
{
return(control.DoDragDrop(dataObject, allowedEffects));
}
finally
{
UnregisterDefaultDragSource(control);
}
}
private void DragImage(Control ctrl)
{
if (ctrl.BackgroundImage != null)
{
string tmpImageName = GetBmpFileTempName();
ctrl.BackgroundImage.Save(tmpImageName);
StringCollection filePaths = new StringCollection();
filePaths.Add(tmpImageName);
DataObject data = new DataObject();
data.SetFileDropList(filePaths);
ctrl.DoDragDrop(data, DragDropEffects.Copy);
}
}
public static object CallControlDoDragDrop(Control c, object[] obj)
{
return c.DoDragDrop(obj[0], (DragDropEffects)obj[1]);
}
public static DragDropEffects DoDragDrop(List<string> lstPaths, Control control, bool fSameDirecotry) {
DragDropEffects none;
if((lstPaths == null) || (lstPaths.Count == 0)) {
return DragDropEffects.None;
}
IShellFolder ppv = null;
object obj2 = null;
List<IntPtr> list = new List<IntPtr>();
try {
IntPtr[] ptrArray;
if(fSameDirecotry) {
IntPtr ptr2;
IntPtr item = PInvoke.ILCreateFromPath(lstPaths[0]);
list.Add(item);
if((PInvoke.SHBindToParent(item, ExplorerGUIDs.IID_IShellFolder, out ppv, out ptr2) != 0) || (ppv == null)) {
return DragDropEffects.None;
}
List<IntPtr> list2 = new List<IntPtr>();
if(ptr2 != IntPtr.Zero) {
list2.Add(ptr2);
}
for(int i = 1; i < lstPaths.Count; i++) {
IntPtr ptr3 = PInvoke.ILCreateFromPath(lstPaths[i]);
if(ptr3 != IntPtr.Zero) {
list.Add(ptr3);
IntPtr ptr4 = PInvoke.ILFindLastID(ptr3);
if(ptr4 != IntPtr.Zero) {
list2.Add(ptr4);
}
}
}
if(list2.Count == 0) {
return DragDropEffects.None;
}
ptrArray = list2.ToArray();
}
else {
foreach(string str in lstPaths) {
IntPtr ptr5 = PInvoke.ILCreateFromPath(str);
if(ptr5 != IntPtr.Zero) {
list.Add(ptr5);
}
}
PInvoke.SHGetDesktopFolder(out ppv);
if((list.Count == 0) || (ppv == null)) {
return DragDropEffects.None;
}
ptrArray = list.ToArray();
}
uint rgfReserved = 0;
Guid riid = ExplorerGUIDs.IID_IDataObject;
ppv.GetUIObjectOf(IntPtr.Zero, (uint)ptrArray.Length, ptrArray, ref riid, ref rgfReserved, out obj2);
if(obj2 != null) {
return control.DoDragDrop(obj2, DragDropEffects.Link | DragDropEffects.Move | DragDropEffects.Copy);
}
none = DragDropEffects.None;
}
finally {
if(obj2 != null) {
Marshal.ReleaseComObject(obj2);
obj2 = null;
}
if(ppv != null) {
Marshal.ReleaseComObject(ppv);
ppv = null;
}
foreach(IntPtr ptr6 in list) {
if(ptr6 != IntPtr.Zero) {
PInvoke.CoTaskMemFree(ptr6);
}
}
}
return none;
}
public static DragDropEffects DoDragDrop(string path, Control control) {
DragDropEffects none;
if((path == null) || (path.Length == 0)) {
return DragDropEffects.None;
}
IShellFolder ppv = null;
object obj2 = null;
IntPtr zero = IntPtr.Zero;
try {
IntPtr ptr2;
zero = PInvoke.ILCreateFromPath(path);
if(((zero == IntPtr.Zero) || (PInvoke.SHBindToParent(zero, ExplorerGUIDs.IID_IShellFolder, out ppv, out ptr2) != 0)) || (ppv == null)) {
return DragDropEffects.None;
}
IntPtr[] apidl = new IntPtr[] { ptr2 };
uint rgfReserved = 0;
Guid riid = ExplorerGUIDs.IID_IDataObject;
ppv.GetUIObjectOf(IntPtr.Zero, (uint)apidl.Length, apidl, ref riid, ref rgfReserved, out obj2);
if(obj2 != null) {
return control.DoDragDrop(obj2, DragDropEffects.Link | DragDropEffects.Move | DragDropEffects.Copy);
}
none = DragDropEffects.None;
}
finally {
if(obj2 != null) {
Marshal.ReleaseComObject(obj2);
obj2 = null;
}
if(ppv != null) {
Marshal.ReleaseComObject(ppv);
ppv = null;
}
if(zero != IntPtr.Zero) {
PInvoke.CoTaskMemFree(zero);
}
}
return none;
}
public static object CallControlDoDragDrop(Control c, object[] obj)
{
return(c.DoDragDrop(obj[0], (DragDropEffects)obj[1]));
}
/// <summary>
/// Start drag & drop operation on the currently selected html segment.
/// </summary>
/// <param name="control">the control to start the drag & drop on</param>
private void StartDragDrop(Control control)
{
if (_dragDropData == null)
{
var html = DomUtils.GenerateHtml(_root, HtmlGenerationStyle.Inline, true);
var plainText = DomUtils.GetSelectedPlainText(_root);
_dragDropData = HtmlClipboardUtils.GetDataObject(html, plainText);
}
control.DoDragDrop(_dragDropData, DragDropEffects.Copy);
}
/// <summary>
/// Performs a default drag and drop operation for the specified drag source.
/// </summary>
/// <param name="control">The drag source Control.</param>
/// <param name="dataObject">The data object associated to the drag and drop operation.</param>
/// <param name="allowedEffects">The allowed drop effects.</param>
/// <param name="data">The associated data.</param>
/// <returns>The accepted drop effects from the completed operation.</returns>
private static DragDropEffects DoDragDropInternal(Control control, IDataObject dataObject, DragDropEffects allowedEffects, KeyValuePair<string, object>[] data)
{
// Set the data onto the data object.
if (data != null)
{
foreach (KeyValuePair<string, object> dataPair in data)
dataObject.SetDataEx(dataPair.Key, dataPair.Value);
}
try
{
return control.DoDragDrop(dataObject, allowedEffects);
}
finally
{
UnregisterDefaultDragSource(control);
}
}
private void transferImage(Control owner, Control image)
{
using (var bitmap = new Bitmap(image.Width, image.Height))
{
image.DrawToBitmap(bitmap, new Rectangle(0, 0, image.Width, image.Height));
owner.DoDragDrop(bitmap, DragDropEffects.Copy);
}
}
public void DoDragDrop(Control control, object data, DragDropEffects allowedEffects)
{
control.DoDragDrop(data, allowedEffects);
}