public static int GetTextMetrics(HandleRef hDC, ref System.Windows.Forms.NativeMethods.TEXTMETRIC lptm)
{
if (Marshal.SystemDefaultCharSize == 1)
{
System.Windows.Forms.NativeMethods.TEXTMETRICA textmetrica = new System.Windows.Forms.NativeMethods.TEXTMETRICA();
int textMetricsA = GetTextMetricsA(hDC, ref textmetrica);
lptm.tmHeight = textmetrica.tmHeight;
lptm.tmAscent = textmetrica.tmAscent;
lptm.tmDescent = textmetrica.tmDescent;
lptm.tmInternalLeading = textmetrica.tmInternalLeading;
lptm.tmExternalLeading = textmetrica.tmExternalLeading;
lptm.tmAveCharWidth = textmetrica.tmAveCharWidth;
lptm.tmMaxCharWidth = textmetrica.tmMaxCharWidth;
lptm.tmWeight = textmetrica.tmWeight;
lptm.tmOverhang = textmetrica.tmOverhang;
lptm.tmDigitizedAspectX = textmetrica.tmDigitizedAspectX;
lptm.tmDigitizedAspectY = textmetrica.tmDigitizedAspectY;
lptm.tmFirstChar = (char)textmetrica.tmFirstChar;
lptm.tmLastChar = (char)textmetrica.tmLastChar;
lptm.tmDefaultChar = (char)textmetrica.tmDefaultChar;
lptm.tmBreakChar = (char)textmetrica.tmBreakChar;
lptm.tmItalic = textmetrica.tmItalic;
lptm.tmUnderlined = textmetrica.tmUnderlined;
lptm.tmStruckOut = textmetrica.tmStruckOut;
lptm.tmPitchAndFamily = textmetrica.tmPitchAndFamily;
lptm.tmCharSet = textmetrica.tmCharSet;
return(textMetricsA);
}
return(GetTextMetricsW(hDC, ref lptm));
}
public static extern int GetTextMetricsW(HandleRef hDC, [In, Out] ref System.Windows.Forms.NativeMethods.TEXTMETRIC lptm);
public virtual void PopupDialog(int row)
{
GridEntry gridEntryFromRow = this.GetGridEntryFromRow(row);
if (gridEntryFromRow != null)
{
if ((this.dropDownHolder != null) && this.dropDownHolder.GetUsed())
{
this.CloseDropDown();
}
else
{
bool needsDropDownButton = gridEntryFromRow.NeedsDropDownButton;
bool enumerable = gridEntryFromRow.Enumerable;
bool needsCustomEditorButton = gridEntryFromRow.NeedsCustomEditorButton;
if (enumerable && !needsDropDownButton)
{
this.DropDownListBox.Items.Clear();
object propertyValue = gridEntryFromRow.PropertyValue;
object[] propertyValueList = gridEntryFromRow.GetPropertyValueList();
int num = 0;
IntPtr dC = System.Windows.Forms.UnsafeNativeMethods.GetDC(new HandleRef(this.DropDownListBox, this.DropDownListBox.Handle));
IntPtr handle = this.Font.ToHfont();
System.Internal.HandleCollector.Add(handle, System.Windows.Forms.NativeMethods.CommonHandles.GDI);
System.Windows.Forms.NativeMethods.TEXTMETRIC lptm = new System.Windows.Forms.NativeMethods.TEXTMETRIC();
int currentValueIndex = -1;
try
{
handle = System.Windows.Forms.SafeNativeMethods.SelectObject(new HandleRef(this.DropDownListBox, dC), new HandleRef(this.Font, handle));
currentValueIndex = this.GetCurrentValueIndex(gridEntryFromRow);
if ((propertyValueList != null) && (propertyValueList.Length > 0))
{
IntNativeMethods.SIZE size = new IntNativeMethods.SIZE();
for (int i = 0; i < propertyValueList.Length; i++)
{
string propertyTextValue = gridEntryFromRow.GetPropertyTextValue(propertyValueList[i]);
this.DropDownListBox.Items.Add(propertyTextValue);
IntUnsafeNativeMethods.GetTextExtentPoint32(new HandleRef(this.DropDownListBox, dC), propertyTextValue, size);
num = Math.Max(size.cx, num);
}
}
System.Windows.Forms.SafeNativeMethods.GetTextMetrics(new HandleRef(this.DropDownListBox, dC), ref lptm);
num += (2 + lptm.tmMaxCharWidth) + SystemInformation.VerticalScrollBarWidth;
handle = System.Windows.Forms.SafeNativeMethods.SelectObject(new HandleRef(this.DropDownListBox, dC), new HandleRef(this.Font, handle));
}
finally
{
System.Windows.Forms.SafeNativeMethods.DeleteObject(new HandleRef(this.Font, handle));
System.Windows.Forms.UnsafeNativeMethods.ReleaseDC(new HandleRef(this.DropDownListBox, this.DropDownListBox.Handle), new HandleRef(this.DropDownListBox, dC));
}
if (currentValueIndex != -1)
{
this.DropDownListBox.SelectedIndex = currentValueIndex;
}
this.SetFlag(0x40, false);
this.DropDownListBox.Height = Math.Max(lptm.tmHeight + 2, Math.Min(200, this.DropDownListBox.PreferredHeight));
this.DropDownListBox.Width = Math.Max(num, this.GetRectangle(row, 2).Width);
try
{
bool flag4 = this.DropDownListBox.Items.Count > (this.DropDownListBox.Height / this.DropDownListBox.ItemHeight);
this.SetFlag(0x400, flag4);
this.DropDownControl(this.DropDownListBox);
}
finally
{
this.SetFlag(0x400, false);
}
this.Refresh();
}
else if (needsCustomEditorButton || needsDropDownButton)
{
try
{
this.SetFlag(0x10, true);
this.Edit.DisableMouseHook = true;
try
{
this.SetFlag(0x400, gridEntryFromRow.UITypeEditor.IsDropDownResizable);
gridEntryFromRow.EditPropertyValue(this);
}
finally
{
this.SetFlag(0x400, false);
}
}
finally
{
this.SetFlag(0x10, false);
this.Edit.DisableMouseHook = false;
}
this.Refresh();
if (this.FocusInside)
{
this.SelectGridEntry(gridEntryFromRow, false);
}
}
}
}
}
private SizeF GetFontAutoScaleDimensions()
{
SizeF empty = SizeF.Empty;
IntPtr handle = System.Windows.Forms.UnsafeNativeMethods.CreateCompatibleDC(System.Windows.Forms.NativeMethods.NullHandleRef);
if (handle == IntPtr.Zero)
{
throw new Win32Exception();
}
HandleRef hDC = new HandleRef(this, handle);
try
{
HandleRef hObject = new HandleRef(this, base.FontHandle);
HandleRef ref4 = new HandleRef(this, System.Windows.Forms.SafeNativeMethods.SelectObject(hDC, hObject));
try
{
System.Windows.Forms.NativeMethods.TEXTMETRIC lptm = new System.Windows.Forms.NativeMethods.TEXTMETRIC();
System.Windows.Forms.SafeNativeMethods.GetTextMetrics(hDC, ref lptm);
empty.Height = lptm.tmHeight;
if ((lptm.tmPitchAndFamily & 1) != 0)
{
IntNativeMethods.SIZE size = new IntNativeMethods.SIZE();
IntUnsafeNativeMethods.GetTextExtentPoint32(hDC, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ", size);
empty.Width = (int) Math.Round((double) (((float) size.cx) / ((float) "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".Length)));
return empty;
}
empty.Width = lptm.tmAveCharWidth;
return empty;
}
finally
{
System.Windows.Forms.SafeNativeMethods.SelectObject(hDC, ref4);
}
}
finally
{
System.Windows.Forms.UnsafeNativeMethods.DeleteCompatibleDC(hDC);
}
return empty;
}