[Win32 & GDI+Flat] 用分层窗口实现简单仿Aero透明效果

傷城~ 2022-08-04 12:57 252阅读 0赞

本博文由CSDN博主zuishikonghuan所作，版权归zuishikonghuan所有，转载请注明出处：[http://blog.csdn.net/zuishikonghuan/article/details/48054203][http_blog.csdn.net_zuishikonghuan_article_details_48054203]

首先说一下GDI+Flat：我有写过一个GDI+Flat的系列博客，一共有10篇，都是顺着的，这是第一篇：[GdiplusFlat（1）GDI+平面API：用GDI的思想进行GDI+编程][GdiplusFlat_1_GDI_API_GDI_GDI]，有兴趣的可以看一看。因为本篇中的绘图函数都是用的GDI+Flat，因此我们需要自己声明函数，自己定义数据结构，只用Win32和c语言的基本数据类型。

好了，废话不多说，先上图：

测试结果：XP、Win7（Areo/Basic）、Win8.1、Win10下都能很好的工作

![Center][]

如果觉得标题栏和边框不好看，可以改颜色，也可以改成渐变的，还可以用图片，比如画个透明玻璃的PNG图片，如果是带阴影的玻璃的图片，就和Win7的Aero差不多了，可惜我不会PS。

源代码如下：

#include "stdafx.h"
    //#include <gdiplus.h>
    //#include <gdiplusflat.h>
    #pragma comment(lib,"gdiplus.lib")//very important
    
    #include <windows.h>
    #include <windowsx.h>
    #pragma comment(lib,"user32.lib")
    #pragma comment(lib,"gdi32.lib")
    
    #pragma comment(lib,"Msimg32.lib")
    
    #include<OleCtl.h>
    #pragma comment(lib,"OleAut32.lib")
    
    //GDI+Flat
    
    #define ARGB(a,r,g,b) ((int)(((BYTE)a)<<24)|(((BYTE)r)<<16)|(((BYTE)g)<<8)|((BYTE)b))
    
    typedef struct _GdiplusStartupInput{
    	unsigned int GdiplusVersion;
    	unsigned int DebugEventCallback;
    	BOOL SuppressBackgroundThread;
    	BOOL SuppressExternalCodecs;
    }GdiplusStartupInput;
    
    extern "C" int WINAPI GdiplusStartup(int* token, GdiplusStartupInput *input, int *output);
    extern "C" void WINAPI GdiplusShutdown(int token);
    extern "C" int WINAPI GdipCreateFromHDC(HDC hdc, int* graphics);
    extern "C" int WINAPI GdipDeleteGraphics(int graphics);
    //画笔
    extern "C" int WINAPI GdipCreatePen1(unsigned int argb_color, float width, int unit, int** pen);
    extern "C" int WINAPI GdipDeletePen(int* pen);
    //画矩形 画直线
    extern "C" int WINAPI GdipDrawRectangle(int graphics, int* pen, float x, float y, float width, float height);
    extern "C" int WINAPI GdipDrawLine(int graphics, int* pen, float x1, float y1, float x2, float y2);
    //画刷
    typedef struct _PointF{
    	float x;
    	float y;
    }PointF;
    extern "C" int WINAPI GdipCreateSolidFill(unsigned int argb_color, int** brush);
    extern "C" int WINAPI GdipCreateLineBrush(PointF* point1, PointF* point2, unsigned int argb_color1, unsigned int argb_color2, int wrapMode, int** lineGradient);
    extern "C" int WINAPI GdipDeleteBrush(int* brush);
    //画填充矩形
    extern "C" int WINAPI GdipFillRectangle(int graphics, int* brush, float x, float y, float width, float height);
    //画图片
    extern "C" int WINAPI GdipLoadImageFromFile(WCHAR* filename, int** image);
    extern "C" int WINAPI GdipLoadImageFromStream(LPSTREAM stream, int** image);
    extern "C" int WINAPI GdipGetImageDimension(int* image, float* width, float* height);
    extern "C" int WINAPI GdipDrawImageRect(int graphics, int* image, float x, float y, float width, float height);
    extern "C" int WINAPI GdipDisposeImage(int* image);
    //画文字
    typedef struct _RectF{
    	float x;
    	float y;
    	float Width;
    	float Height;
    }RectF;
    extern "C" int WINAPI GdipSetTextRenderingHint(int graphics, int mode);
    extern "C" int WINAPI GdipSetSmoothingMode(int graphics, int smoothingMode);
    extern "C" int WINAPI GdipCreateFontFamilyFromName(WCHAR* name, int* fontCollection, int** fontFamily);
    extern "C" int WINAPI GdipCreateStringFormat(int formatAttributes, short language, int** format);
    extern "C" int WINAPI GdipSetStringFormatAlign(int* format, int align);
    extern "C" int WINAPI GdipSetStringFormatLineAlign(int* format, int align);
    extern "C" int WINAPI GdipCreateFont(int* fontFamily, float emSize, int style, int unit, int** font);
    extern "C" int WINAPI GdipDrawString(int graphics, WCHAR* string, int length, int* font, RectF* layoutRect, int* stringFormat, int* brush);
    extern "C" int WINAPI GdipDeleteFont(int* font);
    extern "C" int WINAPI GdipDeleteStringFormat(int* format);
    extern "C" int WINAPI GdipDeleteFontFamily(int* fontFamily);
    
    int token;
    int* pen;
    int* brush;
    int* image;
    
    void WINAPI MyDrawText(HDC hdc, LPWSTR str, LONG left, LONG top, LONG width, LONG height, BOOL iscenter, COLORREF color = 0){
    	int graphics;
    
    	GdipCreateFromHDC(hdc, &graphics);//创建Graphics对象
    	GdipCreateSolidFill(color, &brush);//创建单色画刷
    
    	GdipSetTextRenderingHint(graphics, 3);//设置Graphics对象的文本渲染模式
    	int* fontfamily;
    	GdipSetSmoothingMode(graphics, 4);//设置Graphics对象的渲染质量
    	GdipCreateFontFamilyFromName(L"宋体", NULL, &fontfamily);//创建一个基于指定的字体系列的FontFamily对象
    	int* format;
    	GdipCreateStringFormat(0, 0, &format);//创建一个基于字符串的格式标志和语言的 StringFormat 对象
    	int* font;
    	GdipCreateFont(fontfamily, 12, 0, 2, &font);//创建字体
    	RectF rect; rect = { left, top, width, height };
    	GdipDrawString(graphics, str, -1, font, &rect, 0, brush);//画文字
    
    	GdipDeleteFont(font);//销毁指定Font对象，释放资源
    	GdipDeleteStringFormat(format);//销毁指定StringFormat对象，释放资源
    	GdipDeleteFontFamily(fontfamily);//销毁指定FontFamily对象，释放资源
    	GdipDeleteBrush(brush);//销毁画刷
    
    	GdipDeleteGraphics(graphics);//销毁Graphics对象
    
    
    }//参数：设备上下文句柄，要绘制的字符串，x位置，y位置，宽度，高度，是否绘制在矩形中央，argb颜色
    
    
    //*************************************************************
    LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
    
    WNDCLASS wc;
    const TCHAR* AppName = TEXT("MyWindowClass1");
    HWND hwnd1;
    
    HDC mdc, mdc2;
    
    int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
    	_In_opt_ HINSTANCE hPrevInstance,
    	_In_ LPTSTR    lpCmdLine,
    	_In_ int       nCmdShow)
    {
    	//GDI+开启
    	GdiplusStartupInput StartupInput = { 0 };
    	StartupInput.GdiplusVersion = 1;
    	if (GdiplusStartup(&token, &StartupInput, NULL))MessageBox(0, TEXT("GdiPlus开启失败"), TEXT("错误"), MB_ICONERROR);
    
    	//这里是在构建窗口类结构
    	wc.style = CS_HREDRAW | CS_VREDRAW;
    	wc.lpfnWndProc = WndProc;//窗口回调函数指针
    	wc.cbClsExtra = 0;
    	wc.cbWndExtra = 0;
    	wc.hInstance = hInstance;//实例句柄
    	wc.hIcon = LoadIcon(hInstance, TEXT("ICON_1"));
    	wc.hCursor = LoadCursor(NULL, IDC_ARROW);//默认指针
    	wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
    	wc.lpszMenuName = NULL;
    	wc.lpszClassName = AppName;//窗口类名
    
    	//注册窗口类
    	if (!RegisterClass(&wc))
    	{
    		MessageBox(NULL, TEXT("注册窗口类失败!"), TEXT("错误"), MB_ICONERROR);
    		return 0;
    	}
    
    	//创建窗口
    	int style = WS_OVERLAPPEDWINDOW;
    	hwnd1 = CreateWindowEx(WS_EX_LAYERED | WS_EX_TOPMOST, AppName, TEXT("窗口标题"), style, 0, 0, 0, 0, 0, LoadMenu(hInstance, TEXT("MENU1")), hInstance, 0);
    	if (hwnd1 == NULL)
    	{
    		MessageBox(NULL, TEXT("创建窗口失败!"), TEXT("错误"), MB_ICONERROR);
    		return 0;
    	}
    	//无边框窗口
    	SetWindowLong(hwnd1, GWL_STYLE, WS_OVERLAPPED | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS);
    	SetWindowPos(hwnd1, HWND_TOP, 50, 50, 500, 500, SWP_SHOWWINDOW);
    
    	mdc = CreateCompatibleDC(0);//创建内存DC
    	BITMAPINFO bitmapinfo;
    	RtlZeroMemory(&bitmapinfo, sizeof(BITMAPINFO));
    
    	bitmapinfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    	bitmapinfo.bmiHeader.biWidth = 500;
    	bitmapinfo.bmiHeader.biHeight = 500;
    	bitmapinfo.bmiHeader.biPlanes = 1;
    	bitmapinfo.bmiHeader.biBitCount = 32;
    
    	HBITMAP b, old;
    	b = CreateDIBSection(0, &bitmapinfo, 0, 0, 0, 0);
    	old = (HBITMAP)SelectObject(mdc, b);
    	if (old != NULL){
    		DeleteObject(old);
    	}
    	DeleteObject(b);
    
    	int graphics;
    	GdipCreateFromHDC(mdc, &graphics);//创建Graphics对象
    
    	GdipCreateSolidFill(0x80FFFFFF, &brush);//创建画刷，这是整体的背景，有透明度
    	GdipFillRectangle(graphics, brush, 0, 0, 500, 500);//画填充矩形
    	GdipDeleteBrush(brush);//销毁画刷
    
    	GdipCreatePen1(ARGB(200, 0, 157, 225), 1, 2, &pen);//创建画笔
    	GdipDrawRectangle(graphics, pen, 0, 0, 499, 499);//画矩形
    	GdipDeletePen(pen);//销毁画笔
    
    	MyDrawText(mdc, L"神奇的分层窗口", 25, 8, 0, 0, true, ARGB(254,0,0,0));//画文字，注意透明度用254
    
    	GdipLoadImageFromFile(L"D:\\1.png", &image);//创建Image对象
    	GdipDrawImageRect(graphics, image, 3, 3, 20, 20);//画图片
    	GdipDisposeImage(image);//销毁图片，释放资源
    
    	GdipCreateSolidFill(ARGB(255, 255, 255, 255), &brush);
    	GdipFillRectangle(graphics, brush, 5, 30, 490, 465);//这是画里面的背景
    	GdipDeleteBrush(brush);
    
    	GdipDeleteGraphics(graphics);//销毁Graphics对象
    
    	POINT point; point.x = 0; point.y = 0;//更新分层窗口
    	SIZE size; size.cx = 500; size.cy = 500;
    	BLENDFUNCTION blend;
    	blend.BlendOp = AC_SRC_OVER;
    	blend.BlendFlags = 0;
    	blend.AlphaFormat = AC_SRC_ALPHA;
    	blend.SourceConstantAlpha = 255;
    	UpdateLayeredWindow(hwnd1, NULL, NULL, &size, mdc, &point, 0, &blend, ULW_ALPHA);//。。。。。。更新分层窗口
    
    	//显示、更新窗口
    	ShowWindow(hwnd1, nCmdShow);
    	UpdateWindow(hwnd1);
    
    	//消息循环
    	MSG msg;
    	while (GetMessage(&msg, NULL, 0, 0))
    	{
    		TranslateMessage(&msg);
    		DispatchMessage(&msg);
    	}
    
    	//GDI+关闭
    	GdiplusShutdown(token);//可以把这个写在消息循环后面，程序退出就销毁，或者在不需要GDI+时调用，比如GDI+窗口的WM_DESTROY消息里调用
    	return msg.wParam;
    }
    
    LRESULT CALLBACK WndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
    {
    	switch (uMsg){
    	case WM_CREATE:
    		return 0;
    		break;
    	case WM_DESTROY://窗口已经销毁
    		PostQuitMessage(0);//退出消息循环，结束应用程序
    		return 0;
    		break;
    	case WM_LBUTTONDOWN:
    		//让无边框窗口能够拖动(在窗口客户区拖动)
    		PostMessage(hwnd, WM_SYSCOMMAND, 61458, 0);
    		break;
    	default:
    		break;
    	}
    	return DefWindowProc(hwnd, uMsg, wParam, lParam);//其他消息交给系统处理
    }

这里要说明一下：

1。UpdateLayeredWindow以后就不能在WM\_PAINT里绘图了，但是WM\_PAINT消息依旧响应。

2。需要作图时，应该先把图画到内存DC里，然后再调用UpdateLayeredWindow

3。或者在这个窗口上面再加一个窗口，在WM\_MOVING里面控制另一个窗口移动，要不然分层窗口上是不能放控件的，只能自己一个个画上去

[http_blog.csdn.net_zuishikonghuan_article_details_48054203]: http://blog.csdn.net/zuishikonghuan/article/details/48054203
[GdiplusFlat_1_GDI_API_GDI_GDI]: http://blog.csdn.net/zuishikonghuan/article/details/46982559
[Center]: /images/20220731/713d90f22271428cb1c381ff4ff067e2.png