gdiplus.cpp

《Visual C++.NET专业项目实例开发》源代码Project02Chapter12

	TextBox* textBox3 = new TextBox();		
	textBox3->Location =  System::Drawing::Point(220, 15);
	textBox3->Text = "50"; //pActiveDoc->nThinWidth.ToString();
	textBox3->TabIndex = 1;
	textBox3->Size =  System::Drawing::Size(64, 20);

	TextBox* textBox4 = new TextBox();		
	textBox4->Location =  System::Drawing::Point(220, 45);
	textBox4->Text = "25"; //pActiveDoc->nThickWidth.ToString();
	textBox4->TabIndex = 2;
	textBox4->Size =  System::Drawing::Size(64, 20);
	
	Label* label3 = new Label();
	label3->Location =  System::Drawing::Point(155, 20);
	label3->Text = "Width:";
	label3->Size =  System::Drawing::Size(50, 16);
	label3->TabIndex = 3;
	
	Label* label4 = new Label();
	label4->Location =  System::Drawing::Point(155, 50);
	label4->Text = "Height:";
	label4->Size =  System::Drawing::Size(50, 16);
	label4->TabIndex = 4;		

	//END

	f->FormBorderStyle = FormBorderStyle::FixedDialog;
	// Set the MaximizeBox to false to remove the maximize box.
	f->MaximizeBox = false;
	// Set the MinimizeBox to false to remove the minimize box.
	f->MinimizeBox = false;
	// Set the accept button of the form to button1.
	f->AcceptButton = button1;
	// Set the cancel button of the form to button2.
	f->CancelButton = button2;
	
	f->StartPosition = FormStartPosition::CenterScreen;		
	
	f->Controls->Add(button1);
	f->Controls->Add(button2);
	f->Controls->Add(label1);
	f->Controls->Add(label2);
	f->Controls->Add(label3);
	f->Controls->Add(label4);
	f->Controls->Add(textBox1);  
	f->Controls->Add(textBox2);			
	f->Controls->Add(textBox3);
	f->Controls->Add(textBox4);
		
	System::Windows::Forms::DialogResult res = f->ShowDialog();
	if(res == System::Windows::Forms::DialogResult::OK )
	{			
		pActiveDoc->nShapeLeft = UInt16::Parse(textBox1->Text);
		pActiveDoc->nShapeTop = UInt16::Parse(textBox2->Text);
		pActiveDoc->nShapeWidth = UInt16::Parse(textBox3->Text);
		pActiveDoc->nShapeHeight = UInt16::Parse(textBox4->Text);
		pActiveView->HandleFilledEllipseDraw();
		f->Close();
	}			
}

void CMainWindow::DrawFilledRect()
{
	Form* f = new Form();
	//Get the document of active view
	CGDIPlusView* pActiveView = dynamic_cast<CGDIPlusView*> (this->ActiveMdiChild);
	CGDIPlusDoc* pActiveDoc = pActiveView->GetDocument();

	f->AutoScaleBaseSize =  System::Drawing::Size(5, 13);
	f->Text = "Draw Filled Rectangle";
	
	f->ClientSize =  System::Drawing::Size(300, 125);
	
	Button* button1 = new Button();
	button1->Location =  System::Drawing::Point(70, 100);
	button1->Size =  System::Drawing::Size(60, 20);
	button1->TabIndex = 1;
	button1->Text = "OK";
	button1->DialogResult  = System::Windows::Forms::DialogResult::OK ;//Make this "OK" button

	Button* button2 = new Button();
	button2->Location =  System::Drawing::Point(150, 100);
	button2->Size =  System::Drawing::Size(60, 20);
	button2->TabIndex = 6;
	button2->Text = "Cancel";
	
	//Left
	TextBox* textBox1 = new TextBox();		
	textBox1->Location =  System::Drawing::Point(80, 15);
	textBox1->Text = "10"; //pActiveDoc->nThinWidth.ToString();
	textBox1->TabIndex = 1;
	textBox1->Size =  System::Drawing::Size(64, 20);

	//Top
	TextBox* textBox2 = new TextBox();		
	textBox2->Location =  System::Drawing::Point(80, 45);
	textBox2->Text = "10"; //pActiveDoc->nThickWidth.ToString();
	textBox2->TabIndex = 2;
	textBox2->Size =  System::Drawing::Size(64, 20);
	
	Label* label1 = new Label();
	label1->Location =  System::Drawing::Point(15, 20);
	label1->Text = "Left:";
	label1->Size =  System::Drawing::Size(50, 16);
	label1->TabIndex = 3;
	
	Label* label2 = new Label();
	label2->Location =  System::Drawing::Point(15, 50);
	label2->Text = "Top:";
	label2->Size =  System::Drawing::Size(50, 16);
	label2->TabIndex = 4;		

	//PSK START
	TextBox* textBox3 = new TextBox();		
	textBox3->Location =  System::Drawing::Point(220, 15);
	textBox3->Text = "50"; //pActiveDoc->nThinWidth.ToString();
	textBox3->TabIndex = 1;
	textBox3->Size =  System::Drawing::Size(64, 20);

	TextBox* textBox4 = new TextBox();		
	textBox4->Location =  System::Drawing::Point(220, 45);
	textBox4->Text = "25"; //pActiveDoc->nThickWidth.ToString();
	textBox4->TabIndex = 2;
	textBox4->Size =  System::Drawing::Size(64, 20);
	
	Label* label3 = new Label();
	label3->Location =  System::Drawing::Point(155, 20);
	label3->Text = "Width:";
	label3->Size =  System::Drawing::Size(50, 16);
	label3->TabIndex = 3;
	
	Label* label4 = new Label();
	label4->Location =  System::Drawing::Point(155, 50);
	label4->Text = "Height:";
	label4->Size =  System::Drawing::Size(50, 16);
	label4->TabIndex = 4;		

	//END

	f->FormBorderStyle = FormBorderStyle::FixedDialog;
	// Set the MaximizeBox to false to remove the maximize box.
	f->MaximizeBox = false;
	// Set the MinimizeBox to false to remove the minimize box.
	f->MinimizeBox = false;
	// Set the accept button of the form to button1.
	f->AcceptButton = button1;
	// Set the cancel button of the form to button2.
	f->CancelButton = button2;
	
	f->StartPosition = FormStartPosition::CenterScreen;		
	
	f->Controls->Add(button1);
	f->Controls->Add(button2);
	f->Controls->Add(label1);
	f->Controls->Add(label2);
	f->Controls->Add(label3);
	f->Controls->Add(label4);
	f->Controls->Add(textBox1);  
	f->Controls->Add(textBox2);			
	f->Controls->Add(textBox3);
	f->Controls->Add(textBox4);
		
	System::Windows::Forms::DialogResult res = f->ShowDialog();
	if(res == System::Windows::Forms::DialogResult::OK )
	{			
		//Draw Rectange in the View
		pActiveDoc->nShapeLeft = Int16::Parse(textBox1->Text);
		pActiveDoc->nShapeTop = Int16::Parse(textBox2->Text);
		pActiveDoc->nShapeWidth = Int16::Parse(textBox3->Text);
		pActiveDoc->nShapeHeight = Int16::Parse(textBox4->Text);
		pActiveView->HandleFilledRectDraw();
		f->Close();
	}			
}

//START PSK -- Delegates and Events
public __delegate void MyDelegate(int, int);  //Declare delegate

// Managed class with virtual event
__gc class CMyClass
{
public:
	virtual __event MyDelegate *E;
};

// Implement virtual events
__gc class EventSource : public CMyClass
{
public:
	__event MyDelegate *E;
	void Fire_E(int n1, int n2)
	{
		E(n1, n2);
	}
};

// class to hold event handlers, the event receiver
public __gc struct EventReceiver
{
	void Add(int num1, int num2)
	{
		String* pStr;
		pStr = String::Format(" {0} + {1} = {2}", Convert::ToString(num1), Convert::ToString(num2), Convert::ToString(num1+num2));
		MessageBox::Show(pStr, "Addition");
	}
	void Subtract(int num1, int num2)
	{
		String* pStr;
		pStr = String::Format(" {0} - {1} = {2}", Convert::ToString(num1), Convert::ToString(num2), Convert::ToString(num1-num2));
		MessageBox::Show(pStr, "Subtraction");
	}
	void Multiply(int num1, int num2)
	{
		String* pStr;
		pStr = String::Format(" {0} * {1} = {2}", Convert::ToString(num1), Convert::ToString(num2), Convert::ToString(num1*num2));
		MessageBox::Show(pStr, "Multiplication");
	}
	void Divide(int num1, int num2)
	{
		if (num2 == 0)
		{
			MessageBox::Show("Divide by Zero eror", "Division");
			return;
		}

		String* pStr;
		pStr = String::Format(" {0} / {1} = {2} (Rounded)", Convert::ToString(num1), Convert::ToString(num2), Convert::ToString(num1/num2));
		MessageBox::Show(pStr, "Division");
	}
};

void CMainWindow::HandleDelegate()
{
	int nOp = 0;
	int nNum1 = 0;
	int nNum2 = 0;
	String* pOp;

	//Simple calculation form

	Form* f = new Form();

	//Get the document of active view
	CGDIPlusView* pActiveView = dynamic_cast<CGDIPlusView*> (this->ActiveMdiChild);
	CGDIPlusDoc* pActiveDoc = pActiveView->GetDocument();

	f->AutoScaleBaseSize =  System::Drawing::Size(5, 13);
	f->Text = "Simple Calculation";

	f->ClientSize =  System::Drawing::Size(200, 125);

	ComboBox* cmbBox1 = new ComboBox();
	cmbBox1->Location =  System::Drawing::Point(70, 40);
	cmbBox1->Size =  System::Drawing::Size(30, 20);
	cmbBox1->TabIndex = 2;
	cmbBox1->set_DropDownStyle(ComboBoxStyle::DropDownList);
	//Add existing operations
	cmbBox1->Items->Add(Convert::ToString("+"));
	cmbBox1->Items->Add(Convert::ToString("-"));
	cmbBox1->Items->Add(Convert::ToString("*"));
	cmbBox1->Items->Add(Convert::ToString("/"));

	Label* label1 = new Label();
	label1->Location =  System::Drawing::Point(15, 20);
	label1->Text = "Num1:";
	label1->Size =  System::Drawing::Size(40, 16);
	
	Label* label2 = new Label();
	label2->Location =  System::Drawing::Point(15, 48);
	label2->Text = "Operation:";
	label2->Size =  System::Drawing::Size(56, 16);

	Label* label3 = new Label();
	label3->Location =  System::Drawing::Point(15, 75);
	label3->Text = "Num2:";
	label3->Size =  System::Drawing::Size(40, 16);

	Button* button1 = new Button();
	button1->Location =  System::Drawing::Point(35, 100);
	button1->Size =  System::Drawing::Size(60, 20);
	button1->TabIndex = 4;
	button1->Text = "OK";
	button1->DialogResult  = System::Windows::Forms::DialogResult::OK ;//Make this "OK" button

	Button* button2 = new Button();
	button2->Location =  System::Drawing::Point(105, 100);
	button2->Size =  System::Drawing::Size(60, 20);
	button2->TabIndex = 5;
	button2->Text = "Cancel";
	
	TextBox* textBox1 = new TextBox();		
	textBox1->Location =  System::Drawing::Point(70, 15);
	textBox1->TabIndex = 1;
	textBox1->Size =  System::Drawing::Size(64, 20);

	TextBox* textBox2 = new TextBox();		
	textBox2->Location =  System::Drawing::Point(70, 65);
	textBox2->TabIndex = 3;
	textBox2->Size =  System::Drawing::Size(64, 20);
	
	f->FormBorderStyle = FormBorderStyle::FixedDialog;
	f->MaximizeBox = false;
	f->MinimizeBox = false;
	f->AcceptButton = button1;
	f->CancelButton = button2;
	
	f->StartPosition = FormStartPosition::CenterScreen;		
	
	f->Controls->Add(button1);
	f->Controls->Add(button2);
	f->Controls->Add(cmbBox1); 
	f->Controls->Add(textBox1);  
	f->Controls->Add(textBox2);			
	f->Controls->Add(label1);			
	f->Controls->Add(label2);			
	f->Controls->Add(label3);			
		
	System::Windows::Forms::DialogResult res = f->ShowDialog();
	if(res == System::Windows::Forms::DialogResult::OK )
	{	
		String *pStr1, *pStr2;
		pStr1 = textBox1->Text;
		pStr1 = pStr1->Trim();
		pStr2 = textBox2->Text;
		pStr2 = pStr2->Trim();
		//Check for Empty values
		if (pStr1 == "" || pStr2 == "")
		{
			MessageBox::Show("Operands missing...", "Message");
			return;
		}

		//Convert Strings to Integers
		nNum1 = Convert::ToInt16(pStr1);
		nNum2 = Convert::ToInt16(pStr2);
		//Get the operand from the Combo box
		pOp = cmbBox1->Text;

		//Check which operator (+,-,*,/) user has choosen
		if (pOp->CompareTo("+") == 0)
			nOp=1;
		else if (pOp->CompareTo("-") == 0)
			nOp=2;
		else if (pOp->CompareTo("*") == 0)
			nOp=3;
		else if (pOp->CompareTo("/") == 0)
			nOp=4;

		f->Close();
	}

	EventSource* pE = new EventSource;
	EventReceiver* pR = new EventReceiver;

	// Add event handlers
	if (nOp == 1)
		pE->E += new MyDelegate(pR, &EventReceiver::Add);
	else if (nOp == 2)
		pE->E += new MyDelegate(pR, &EventReceiver::Subtract);
	else if (nOp == 3)
		pE->E += new MyDelegate(pR, &EventReceiver::Multiply);
	else if (nOp == 4)
		pE->E += new MyDelegate(pR, &EventReceiver::Divide);

	// Raise events
	pE->Fire_E(nNum1, nNum2);
}

//Entry point
void main()
{
	Application::Run(new CMainWindow());
}