Direct2D 第3篇绘制文字

MoonlightDesigner

于 2015-12-20 21:07:12 发布

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CC 4.0 BY-SA版权

分类专栏： Direct2D 文章标签： Direct2D D2D 2d GDI VC

本文链接：https://blog.youkuaiyun.com/ubuntu_ai/article/details/50365692

本文是Direct2D系列的第三篇，详细讲解如何使用Direct2D API进行文字绘制，涵盖字体选择、布局、样式设置等关键步骤，适用于Windows平台的2D图形开发，是GDI和VC开发者进阶Direct2D的重要参考。

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#include <windows.h>
#include <d2d1.h>
#include <d2d1helper.h>
#include <dwrite.h>
#pragma comment(lib, "dwrite.lib")
#pragma comment(lib, "d2d1.lib")

HINSTANCE g_hinst;
HWND g_hwnd;

ID2D1Factory * g_factory;
ID2D1HwndRenderTarget * g_render_target;
ID2D1SolidColorBrush  * g_brush;

IDWriteFactory * g_write_factory;
IDWriteTextFormat * g_text_format;


bool AppInit()
{
	D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &g_factory);

	RECT rc;
	GetClientRect(g_hwnd, &rc);
 
	g_factory->CreateHwndRenderTarget(
		D2D1::RenderTargetProperties(),
		D2D1::HwndRenderTargetProperties(g_hwnd, D2D1::SizeU(rc.right - rc.left, rc.bottom - rc.top)	),
		&g_render_target);

	g_render_target->CreateSolidColorBrush(D2D1::ColorF(D2D1::ColorF::ForestGreen), &g_brush);

	// Init Font
	DWriteCreateFactory(DWRITE_FACTORY_TYPE_SH