public void CreateMultipleIconFromSameHandle()
{
IntPtr handle;
using (Icon icon = new Icon(TestBitmap.getInFile("bitmaps/16x16x16.ico")))
{
Assert.AreEqual(16, icon.Height, "Original.Height");
Assert.AreEqual(16, icon.Width, "Original.Width");
handle = icon.Handle;
using (Icon icon2 = Icon.FromHandle(handle))
{
Assert.AreEqual(16, icon2.Height, "2.Height");
Assert.AreEqual(16, icon2.Width, "2.Width");
Assert.AreEqual(handle, icon2.Handle, "2.Handle");
IconTest.SaveAndCompare("Handle2", icon2, false);
}
using (Icon icon3 = Icon.FromHandle(handle))
{
Assert.AreEqual(16, icon3.Height, "3.Height");
Assert.AreEqual(16, icon3.Width, "3.Width");
Assert.AreEqual(handle, icon3.Handle, "3.Handle");
IconTest.SaveAndCompare("Handle3", icon3, false);
}
}
// unlike other cases (HICON, HBITMAP) handle DOESN'T survives original icon disposal
// commented / using freed memory is risky ;-)
}
public void CreateMultipleIconFromSameHICON()
{
IntPtr handle;
using (Icon icon = new Icon(TestBitmap.getInFile("bitmaps/16x16x16.ico")))
{
Assert.AreEqual(16, icon.Height, "Original.Height");
Assert.AreEqual(16, icon.Width, "Original.Width");
handle = icon.ToBitmap().GetHicon();
}
// HICON survives
using (Icon icon2 = Icon.FromHandle(handle))
{
Assert.AreEqual(16, icon2.Height, "2.Height");
Assert.AreEqual(16, icon2.Width, "2.Width");
Assert.AreEqual(handle, icon2.Handle, "2.Handle");
IconTest.SaveAndCompare("HICON2", icon2, false);
}
using (Icon icon3 = Icon.FromHandle(handle))
{
Assert.AreEqual(16, icon3.Height, "3.Height");
Assert.AreEqual(16, icon3.Width, "3.Width");
Assert.AreEqual(handle, icon3.Handle, "3.Handle");
IconTest.SaveAndCompare("HICON", icon3, false);
}
}
public void HandleRoundtrip()
{
IntPtr handle;
using (Icon icon = new Icon(TestBitmap.getInFile("bitmaps/16x16x16.ico")))
{
Assert.AreEqual(16, icon.Height, "Original.Height");
Assert.AreEqual(16, icon.Width, "Original.Width");
handle = icon.Handle;
using (Icon icon2 = Icon.FromHandle(handle))
{
Assert.AreEqual(16, icon2.Height, "FromHandle.Height");
Assert.AreEqual(16, icon2.Width, "FromHandle.Width");
Assert.AreEqual(handle, icon2.Handle, "FromHandle.Handle");
IconTest.SaveAndCompare("Handle", icon2, false);
}
}
// unlike other cases (HICON, HBITMAP) handle DOESN'T survives original icon disposal
// commented / using freed memory is risky ;-)
/*using (Icon icon3 = Icon.FromHandle (handle)) {
* Assert.AreEqual (0, icon3.Height, "Survivor.Height");
* Assert.AreEqual (0, icon3.Width, "Survivor.Width");
* Assert.AreEqual (handle, icon3.Handle, "Survivor.Handle");
* }*/
}
public void HiconRoundtrip()
{
IntPtr handle;
using (Icon icon = new Icon(TestResourceHelper.GetFullPathOfResource("Test/System.Drawing/bitmaps/16x16x16.ico"))) {
Assert.AreEqual(16, icon.Height, "Original.Height");
Assert.AreEqual(16, icon.Width, "Original.Width");
handle = icon.ToBitmap().GetHicon();
}
// HICON survives
using (Icon icon2 = Icon.FromHandle(handle)) {
Assert.AreEqual(16, icon2.Height, "Survivor.Height");
Assert.AreEqual(16, icon2.Width, "Survivor.Width");
Assert.AreEqual(handle, icon2.Handle, "Survivor.Handle");
IconTest.SaveAndCompare("HICON", icon2, false);
}
}
public void HiconRoundtrip()
{
IntPtr handle;
using (Icon icon = new Icon(TestBitmap.getInFile("bitmaps/16x16x16.ico"))) {
Assert.AreEqual(16, icon.Height, "Original.Height");
Assert.AreEqual(16, icon.Width, "Original.Width");
handle = icon.ToBitmap().GetHicon();
}
// HICON survives
using (Icon icon2 = Icon.FromHandle(handle)) {
Assert.AreEqual(16, icon2.Height, "Survivor.Height");
Assert.AreEqual(16, icon2.Width, "Survivor.Width");
Assert.AreEqual(handle, icon2.Handle, "Survivor.Handle");
IconTest.SaveAndCompare("HICON", icon2, false);
}
}