diff --git a/source/example/example.d b/source/example/example.d
index 3a596aa..ec740a0 100644
--- a/source/example/example.d
+++ b/source/example/example.d
@@ -120,7 +120,7 @@ class Application : TkdApplication
 	 */
 	private void openMessageDialog(CommandArgs args)
 	{
-		auto dialog = new MessageDialog()
+		auto dialog = new MessageDialog(this.mainWindow)
 			.setMessage("Lorem ipsum dolor sit amet.")
 			.setDetailMessage("Nunc at aliquam arcu. Sed eget tellus ligula.\nSed egestas est et tempus cursus.")
 			.setType(MessageDialogType.okcancel)
@@ -155,9 +155,9 @@ class Application : TkdApplication
 	 */
 	private void showAbout(CommandArgs args)
 	{
-		auto dialog = new MessageDialog("About")
+		auto dialog = new MessageDialog(this.mainWindow, "About")
 			.setMessage("Tkd Showcase")
-			.setDetailMessage("An showcase Tkd application demonstrating menus, widgets and dialogs.\n\nThe possiblities are endless.")
+			.setDetailMessage("A showcase Tkd application demonstrating menus, widgets and dialogs.\n\nThe possiblities are endless.")
 			.show();
 	}
 
diff --git a/source/tkd/window/dialog/messagedialog.d b/source/tkd/window/dialog/messagedialog.d
index 0b1b160..7124a33 100644
--- a/source/tkd/window/dialog/messagedialog.d
+++ b/source/tkd/window/dialog/messagedialog.d
@@ -216,15 +216,37 @@ class MessageDialog : Dialog
 	{
 		this.checkDefaultButton();
 
+		// String concatenation is used to build the script here instead of 
+		// using format specifiers to enable supporting input which includes 
+		// Tcl/Tk reserved characters and elements that could be construed as 
+		// format specifiers.
+		string script;
+
 		if (this._parent)
 		{
-			this._tk.eval("tk_messageBox -parent %s -title {%s} -default {%s} -detail {%s} -icon {%s} -message {%s} -type {%s}", this._parent.id, this._title, this._defaultButton, this._detailMessage, this._icon, this._message, this._type);
+			script = std.conv.text(
+				`tk_messageBox -parent `, this._parent.id,
+				` -title {`, this._title, `}`,
+				` -default {`, this._defaultButton, `}`,
+				` -detail {`, this._detailMessage, `}`,
+				` -icon {`, this._icon, `}`,
+				` -message {`, this._message, `}`,
+				` -type {`, this._type, `}`
+			);
 		}
 		else
 		{
-			this._tk.eval("tk_messageBox -title {%s} -default {%s} -detail {%s} -icon {%s} -message {%s} -type {%s}", this._title, this._defaultButton, this._detailMessage, this._icon, this._message, this._type);
+			script = std.conv.text(
+				`tk_messageBox -title {`, this._title, `}`,
+				` -default {`, this._defaultButton, `}`,
+				` -detail {`, this._detailMessage, `}`,
+				` -icon {`, this._icon, `}`,
+				` -message {`, this._message, `}`,
+				` -type {`, this._type, `}`
+			);
 		}
 
+		this._tk.eval(script);
 		this._results = [this._tk.getResult!(string)];
 
 		return cast(T) this;