Graphics^graphics = panel->CreateGraphics();
Pen^ penCurrent = gcnew Pen(Color::Red);
Point p1(10,10);
Point p2(20,20);
graphics->DrawLine(penCurrent,p1,p2);
delete graphics;
接着完整的例子是工作和繪製線
#include "windows.h"
#using <mscorlib.dll>
#using <System.dll>
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>
using namespace System::Windows::Forms;
using namespace System;
using namespace System::Drawing;
ref class MyForm : public Form
{
public:
MyForm()
{
Text = "Hello, Windows Forms!";
auto button = gcnew Button();
button->Text = "Click Me!";
button->Click += gcnew EventHandler(this, &MyForm::button_click);
this->Controls->Add(button);
}
void button_click(Object^ sender, EventArgs^ e)
{
auto g = this->CreateGraphics();
g->DrawLine(Pens::Black, Point(10, 10), Point(50, 50));
delete g;
}
};
int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
Application::Run(gcnew MyForm);
}
錯誤\t \t 1錯誤C2039: '處置':不是「系統::繪製:: Graphics的 – 2012-03-18 09:21:14
一個構件好吧,刪除作品,但面板上仍然沒有任何東西。有沒有其他方式在面板上繪製東西?我以前的代碼可能有誤 – 2012-03-18 09:36:00