GDI+绘制简单图形

#include <windows.h>
#include <gdiplus.h>
using namespace Gdiplus;
#pragma comment(lib, "gdiplus.lib")

VOID OnPaint(HDC hdc) {
Graphics graphics(hdc);
Pen pen(Color(255, 0, 0, 255));
FontFamily fontFamily(L"宋体");
Font font(&fontFamily, 12, FontStyleRegular, UnitPixel);
PointF pointF1(30.0f, 60.0f),pointF2(230.0f, 60.0f);
SolidBrush solidBrush(Color(255, 0, 0, 255));
StringFormat stringFormat;
WCHAR testString[] = L"Hello034∠你好";

stringFormat.SetFormatFlags(StringFormatFlagsDirectionVertical);

graphics.SetSmoothingMode(SmoothingModeDefault);
graphics.DrawLine(&pen, 0, 0, 200, 100);
graphics.DrawEllipse(&pen, 10, 10, 190, 90);
graphics.SetTextRenderingHint(TextRenderingHintSystemDefault);
graphics.DrawString(testString, -1, &font, pointF1, &stringFormat, &solidBrush);

graphics.SetSmoothingMode(SmoothingModeHighQuality);
graphics.DrawLine(&pen, 200, 0, 400, 100);
graphics.DrawEllipse(&pen, 210, 10, 190, 90);
graphics.SetTextRenderingHint(TextRenderingHintAntiAlias);
graphics.DrawString(testString, -1, &font, pointF2, &stringFormat, &solidBrush);
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
HDC hdc;
PAINTSTRUCT ps;

switch(message) {
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
OnPaint(hdc);
EndPaint(hWnd, &ps);
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
}

INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, PSTR, INT iCmdShow) {
HWND hWnd;
MSG msg;
WNDCLASS wndClass;
GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;

GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

wndClass.style = CS_HREDRAW | CS_VREDRAW;
wndClass.lpfnWndProc = WndProc;
wndClass.cbClsExtra = 0;
wndClass.cbWndExtra = 0;
wndClass.hInstance = hInstance;
wndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wndClass.lpszMenuName = NULL;
wndClass.lpszClassName = TEXT("GettingStarted");

RegisterClass(&wndClass);

hWnd = CreateWindow(
TEXT("GettingStarted"), // window class name
TEXT("Getting Started"), // window caption
WS_OVERLAPPEDWINDOW, // window style
CW_USEDEFAULT, // initial x position
CW_USEDEFAULT, // initial y position
CW_USEDEFAULT, // initial x size
CW_USEDEFAULT, // initial y size
NULL, // parent window handle
NULL, // window menu handle
hInstance, // program instance handle
NULL); // creation parameters

ShowWindow(hWnd, iCmdShow);
UpdateWindow(hWnd);

while(GetMessage(&msg, NULL, 0, 0)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}

GdiplusShutdown(gdiplusToken);

return 0;
}