// helper function for generating information about a particular control
// use AssertControlInformation if sticking in an assert - then the work
// to figure out the control info will only be done when the assertion is false.
internal static string GetControlInformation(IntPtr hwnd)
{
if (hwnd == IntPtr.Zero)
{
return("Handle is IntPtr.Zero");
}
string ret = ""; // in RETAIL just return empty string
#if DEBUG
try {
int textLen = SafeNativeMethods.GetWindowTextLength(new HandleRef(null, hwnd));
StringBuilder sb = new StringBuilder(textLen + 1);
UnsafeNativeMethods.GetWindowText(new HandleRef(null, hwnd), sb, sb.Capacity);
string typeOfControl = "Unknown";
string nameOfControl = "Name: ";
Control c = Control.FromHandle(hwnd);
if (c != null)
{
typeOfControl = c.GetType().ToString();
if (!string.IsNullOrEmpty(c.Name))
{
nameOfControl += c.Name;
}
else
{
nameOfControl += "Unknown";
// some extra debug info for toolstripdropdowns...
if (c is ToolStripDropDown)
{
ToolStripDropDown dd = c as ToolStripDropDown;
if (dd.OwnerItem != null)
{
nameOfControl += "\r\n\tOwnerItem: " + dd.OwnerItem.ToString();
}
}
}
}
ret = sb.ToString() + "\r\n\tType: " + typeOfControl + "\r\n\t" + nameOfControl + "\r\n";
}
catch (SecurityException) {
// some suites run under DEBUG - just eat this exception
}
#endif
return(ret);
}
/// <summary>
/// helper function for generating information about a particular control
/// use AssertControlInformation if sticking in an assert - then the work
/// to figure out the control info will only be done when the assertion is false.
/// </summary>
internal static string GetControlInformation(IntPtr hwnd)
{
if (hwnd == IntPtr.Zero)
{
return("Handle is IntPtr.Zero");
}
#if DEBUG
int textLen = SafeNativeMethods.GetWindowTextLength(new HandleRef(null, hwnd));
StringBuilder sb = new StringBuilder(textLen + 1);
UnsafeNativeMethods.GetWindowText(new HandleRef(null, hwnd), sb, sb.Capacity);
string typeOfControl = "Unknown";
string nameOfControl = "Name: ";
Control c = Control.FromHandle(hwnd);
if (c != null)
{
typeOfControl = c.GetType().ToString();
if (!string.IsNullOrEmpty(c.Name))
{
nameOfControl += c.Name;
}
else
{
nameOfControl += "Unknown";
// Add some extra debug info for ToolStripDropDowns.
if (c is ToolStripDropDown dd && dd.OwnerItem != null)
{
nameOfControl += Environment.NewLine + "\tOwnerItem: " + dd.OwnerItem.ToString();
}
}
}
return(sb.ToString() + Environment.NewLine + "\tType: " + typeOfControl + Environment.NewLine + "\t" + nameOfControl + Environment.NewLine);
#else
return(string.Empty);
#endif
}
