Win32怎么显示多个图像并且响应图像点击事件？

2020-04-01 03:24:43 1.4k 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

Opencv图像显示 OpenCV自带的函数可以弹窗显示图像，在做算法或者测试时候可以用一下，但是集成到产品的时候就需要显示在我们exe的界面上了。绘制到WIN32窗口对于win32程序来说，每个控件其实都是一个窗口。而对于每个窗口，都有一个句柄HWND来指代它。句柄这玩意就是一个数字编号，可以理解为指针，就是资源的内存地址这种。将数据绘制到窗口就是对这个窗口句柄做操作。关键函数就是一个windowsAPI：StretchDIBits。通过窗口句柄我们可以获取窗口宽高和绘图dc，将整个窗口设置黑色，最后通过Stre 阅读详情

二话不说，把完整代码放出来

#include "framework.h"

#include "FrameworkUI.h"

#pragma comment(linker,"/manifestdependency:\"type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='x86' publicKeyToken='6595b64144ccf1df' language='*'\"")

#define IDC_2 1002

#define IDC_3 2002

#define IDC_CLOSE 233

#define IDC_MINIMIZE 2233



HINSTANCE g_hInstance;

 

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);

LRESULT CALLBACK BtnProc2(HWND, UINT, WPARAM, LPARAM);//按钮2窗口过程

 

int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)

{

    // TODO: Place code here.

    g_hInstance = hInstance;

    TCHAR className[] = TEXT("my class");

    TCHAR szBtnName2[] = TEXT("MyBtn2");

    WNDCLASS wndclass = { 0 };

    wndclass.hInstance = hInstance;

    wndclass.hbrBackground = (CreateSolidBrush(RGB(30,30,30)));

    wndclass.lpszClassName = className;

    wndclass.lpfnWndProc = WindowProc;

    wndclass.hIcon = LoadIcon(NULL,MAKEINTRESOURCE(IDI_SMALL));

     

    RegisterClass(&wndclass);

     

    HWND hMain = CreateWindow(className, "FrameworkUI", WS_OVERLAPPEDWINDOW, 300, 300, 400, 300, NULL, NULL, hInstance, NULL);

     

    if (!hMain)

    {

        OutputDebugString("=),");

        return 0;

    }

    

    ShowWindow(hMain, SW_SHOW);

    WNDCLASS wndbtn2 = { 0 };

    wndbtn2.cbClsExtra = 0;

    wndbtn2.cbWndExtra = 0;

    wndbtn2.hbrBackground = CreateSolidBrush(RGB(104, 104, 104));

    wndbtn2.hCursor = NULL;

    wndbtn2.hIcon = NULL;

    wndbtn2.hInstance = hInstance;

    wndbtn2.lpfnWndProc = BtnProc2;

    wndbtn2.lpszClassName = szBtnName2;

    wndbtn2.lpszMenuName = NULL;

    wndbtn2.style = CS_HREDRAW | CS_VREDRAW;



    if (!RegisterClass(&wndbtn2))

    {

        MessageBox(NULL, TEXT("RegisterClass wndbtn failed"), TEXT("ERROR"), 0);

        return 0;

    }

    HWND hButton2 = CreateWindow(szBtnName2, TEXT("MyButton2"),

        WS_CHILD | WS_VISIBLE, 0, 0, 0, 0, hMain, NULL, hInstance, 0);

    ShowWindow(hButton2, SW_SHOW);

    UpdateWindow(hButton2);

     

    MSG msg;

    BOOL ret;

    while (ret = GetMessage(&msg, NULL, 0, 0))

    {

        TranslateMessage(&msg);

        DispatchMessage(&msg);

    }

     

    return 0;

}

//主窗口过程                                                                                                                                  PROC

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)

{

    static HFONT hFont;//定义静态字体变量

    static HWND close;

    static HWND MINIMIZE;

    static HWND txt1;

    static HWND txt2;

    static HWND bt1;

    char txt[40];

    HDC         hdc;

    HDC         hdcMem;



    PAINTSTRUCT ps;

    HINSTANCE      hInstance;

    BITMAP         bitmap;



    static HBITMAP hBitmap;                  // 1 静态变量



    static int      bmWidth, bmHeight;       // 2 静态变量

 

    switch (uMsg)

    {

    case WM_CREATE:

        {

            hInstance = ((LPCREATESTRUCT)lParam)->hInstance;                 // 3

            hBitmap = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP1));   // 4

            GetObject(hBitmap, sizeof(BITMAP), &bitmap);                    // 5

            bmWidth = bitmap.bmWidth;                                        // 6

            bmHeight = bitmap.bmHeight;

            hFont = CreateFont(14, 7, 0, 0, 0, FALSE, FALSE, 0, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH | FF_SWISS, "Minecraft");//创建字体

            txt1 = CreateWindow("STATIC", "FrameworkUI", WS_CHILD | WS_VISIBLE | SS_NOTIFY, 10, 10, 120, 20, hwnd, (HMENU)IDC_2, g_hInstance, NULL);//创建静态文本

            SendMessage(txt1, WM_SETFONT, (WPARAM)hFont, TRUE);//发送设置字体消息

            break;

        }

    case WM_PAINT:



        hdc = BeginPaint(hwnd, &ps);                                     // 8



        hdcMem = CreateCompatibleDC(hdc);                                // 9



        SelectObject(hdcMem, hBitmap);                                   // 10



        BitBlt(hdc, 375, 5, bmWidth, bmHeight, hdcMem, 0, 0, SRCCOPY);     // 11 显示位图  



        DeleteDC(hdcMem);                                                // 12



        EndPaint(hwnd, &ps);                                             // 13



        break;

    case WM_CTLCOLORSTATIC://拦截WM_CTLCOLORSTATIC消息

        {

             

            if ((HWND)lParam == GetDlgItem(hwnd, IDC_2))//2

            {

                SetTextColor((HDC)wParam, RGB(165, 120, 120));

                SetBkMode((HDC)wParam, TRANSPARENT);

            }

            if ((HWND)lParam == GetDlgItem(hwnd, IDC_CLOSE))//2

            {

                SetTextColor((HDC)wParam, RGB(199, 0, 0));

                SetBkMode((HDC)wParam, TRANSPARENT);

            }

            if ((HWND)lParam == GetDlgItem(hwnd, IDC_MINIMIZE))//2

            {

                SetTextColor((HDC)wParam, RGB(199, 0, 0));

                SetBkMode((HDC)wParam, TRANSPARENT);

            }

            return (INT_PTR)GetStockObject((NULL_BRUSH));//返回一个空画刷(必须)

        }

    case WM_SIZE:

    {

        LONG_PTR Style = ::GetWindowLongPtr(hwnd, GWL_STYLE);

        Style = Style & ~WS_CAPTION & ~WS_SYSMENU & ~WS_SIZEBOX;

        ::SetWindowLongPtr(hwnd, GWL_STYLE, Style);

        break;

    }

    case WM_LBUTTONDOWN:

    {

        SendMessage(hwnd, WM_NCLBUTTONDOWN, HTCAPTION, 0);  //向窗口发送WM_NCLBUTTONDOWN消息，HTCAPTION 标题

        break;

    }

    case WM_COMMAND:

        {

            switch (LOWORD(wParam))

            {

                case IDC_2:

                    MessageBox(hwnd, "标题栏的消息响应（这明明是静态文本）xD", "提示", MB_OK | MB_ICONINFORMATION);

                break;

                case IDC_3:

                    MessageBox(hwnd, "您点击了按钮。(我需要告诉你你做了什么）", "提示", MB_OK | MB_ICONINFORMATION);

                break;

                case IDB_BITMAP1:

                {

                    case WM_DESTROY:

                    {

                    DeleteObject(hBitmap);                          // 14

                    DeleteObject(hFont);//删除所创建字体对象

                    PostQuitMessage(0);

                    break;

                    }

                }

                case IDC_MINIMIZE:

                {

                    SendMessage(hwnd, WM_SYSCOMMAND, SC_MINIMIZE, 0); // 最小化

                    break;

                }

                break;

            }

            break;

        }

    }

     

    return DefWindowProc(hwnd, uMsg, wParam, lParam);

}

//子窗口过程

LRESULT CALLBACK BtnProc2(HWND hBtn2, UINT message, WPARAM wParam, LPARAM lParam)

{

    PAINTSTRUCT ps = { 0 };

    HDC DC = NULL;

    switch (message)

    {

    case WM_CREATE:

    {

        MoveWindow(hBtn2, 30, 50, 250, 100, TRUE);

        //画椭圆区域，还可以画圆角，多边形等等

        HRGN hRgn = CreateRoundRectRgn(10, 10, 600, 50, 0, 10);

        SetWindowRgn(hBtn2, hRgn, TRUE);

    }

    break;

    case WM_LBUTTONDOWN:

        MessageBox(NULL, TEXT("MyButton2"), TEXT("提示"), 0);

        break;

    case WM_PAINT:

    {

        DC = BeginPaint(hBtn2, &ps);

        SetBkColor(DC, RGB(104, 104, 104)); //按钮背景颜色

        SetTextColor(DC, RGB(210, 210, 210)); //按钮上的文字颜色

        TextOut(DC, 20, 19, _T("BUTTON"), 10); //按钮上的文字

        EndPaint(hBtn2, &ps);

    }

    break;

    default:

        break;

    }

    return DefWindowProc(hBtn2, message, wParam, lParam);



}

IDB_BITMAP1就是要响应关闭时间的位图，单击IDB_BITMAP1的时候关闭程序，并且想要显示多个图片；
如图，给IDB_BITMAP1加一个事件，再多显示几个图片

...全文

跟我一起玩Win32开发（16）：ListView的多个视图在上一个例子中，我们只用到了ListView的Report视图，也就是详细视图。本文我们再把上一篇文章中所用的例子进行一下扩展，例子源码可以到俺的资源区下载。我们为ListView中显示的数据加上图标，并且允许用户选择显示哪种视图，如大图标，小图标，详细信息等。因为代码还比较长，我也不希望把代码全部放出来，在写完本文后，我会将源码上传到资源中。当然了，我也不可能说每一行代码都解释一遍阅读详情

末影小末EnderMo

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切换为时间正序

知识力量在于学习 2020-04-04

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有点复杂啊！好难理解

zlxy158 2020-04-04

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好复杂，但可以作为参考了

y_chen_yc 2020-04-04

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虽然看不懂但是感觉很牛逼的样子

asdfgrjui 2020-04-04

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学习一下新知识

HMIAOERDAI 2020-04-04

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点赞的吃瓜群众

b15221400 2020-04-04

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点赞好牛的在这里。。。。。。。。。。。。。。。。。。。。。。

Yukun6 2020-04-04

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6666666

luchen666 2020-04-04

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也是急需下载一部技术书籍，然而没有c币，学生党也冲不起会员，只好来尝试一下靠评论转积分了...不知道有没有效果，总之先试一试好了...输了这么多字差不多也应该足够了每天回帖即可获得10分可用分！小技巧：教您如何更快获得可用分你还可以输入10000个字符提交回复(Ctrl+Enter)

schlafenhamster 2020-04-03

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改错了，按我的代码写，不能合并到 paint 里！

末影小末EnderMo 2020-04-03

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不知道为什么把那两串代码放到WM_PAINT后里没有任何效果，点击最小化之后关闭的位图就消失了代码放上来看一下，IDB_BITMAP3是HOVER时的图像

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    static HFONT hFont;//定义静态字体变量
    static HWND close;
    static HWND MINIMIZE;
    static HWND txt1;
    static HWND txt2;
    static HWND bt1;
    static int msLast=WM_MOUSELEAVE;
    char txt[40];
    HDC         hdc =NULL;
    HDC hdc2 = NULL;
    HDC         hdcMem;

    PAINTSTRUCT ps;
    HINSTANCE      hInstance = NULL;
    BITMAP         bitmap;

    static HBITMAP hBitmap;                  // 1 静态变量
    static HBITMAP hBitmap2;

    static int      bmWidth, bmHeight;       // 2 静态变量

 
    switch (uMsg)
    {
    case WM_CREATE:
        {
            hInstance = ((LPCREATESTRUCT)lParam)->hInstance;                 // 3
            hBitmap = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP1));   // 4
            GetObject(hBitmap, sizeof(BITMAP), &bitmap);                    // 5
            bmWidth = bitmap.bmWidth;                                        // 6
            bmHeight = bitmap.bmHeight;
            //222222
            hInstance = ((LPCREATESTRUCT)lParam)->hInstance;                 // 3
            hBitmap2 = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP2));   // 4
            GetObject(hBitmap, sizeof(BITMAP), &bitmap);                    // 5
            bmWidth = bitmap.bmWidth;                                        // 6
            bmHeight = bitmap.bmHeight;
            //222222
            hInstance = ((LPCREATESTRUCT)lParam)->hInstance;                 // 3
            hBitmap2 = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP2));   // 4
            GetObject(hBitmap, sizeof(BITMAP), &bitmap);                    // 5
            bmWidth = bitmap.bmWidth;                                        // 6
            bmHeight = bitmap.bmHeight;
            //DRAW ^
            hFont = CreateFont(14, 7, 0, 0, 0, FALSE, FALSE, 0, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH | FF_SWISS, "Minecraft");//创建字体
            txt1 = CreateWindow("STATIC", "CommandlineUI", WS_CHILD | WS_VISIBLE | SS_NOTIFY, 10, 10, 120, 20, hwnd, (HMENU)IDC_2, g_hInstance, NULL);//创建静态文本
            SendMessage(txt1, WM_SETFONT, (WPARAM)hFont, TRUE);//发送设置字体消息
            break;
        }
    case WM_PAINT:

        hdc = BeginPaint(hwnd, &ps);                                     // 8

        hdcMem = CreateCompatibleDC(hdc);                                // 9

        SelectObject(hdcMem, hBitmap);                                   // 10

        BitBlt(hdc, 375, 5, bmWidth, bmHeight, hdcMem, 0, 0, SRCCOPY);     // 11 显示位图  

        DeleteDC(hdcMem);                                                // 12
                                   // 8

        hdcMem = CreateCompatibleDC(hdc);                                // 9

        SelectObject(hdcMem, hBitmap2);                                   // 10

        BitBlt(hdc, 347, 5, bmWidth, bmHeight, hdcMem, 0, 0, SRCCOPY);     // 11 显示位图  

        DeleteDC(hdcMem);                                                // 12

        EndPaint(hwnd, &ps);                                             // 13

        hBitmap = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP3));
        hdc2 = GetDC(hwnd);
        hdcMem = CreateCompatibleDC(hdc);
        SelectObject(hdcMem, hBitmap);
        BitBlt(hdc, 375, 5, bmWidth, bmHeight, hdcMem, 0, 0, SRCCOPY);     // 11 显示位图  
        ReleaseDC(hwnd, hdcMem);
        ReleaseDC(hwnd, hdc);
        msLast = WM_MOUSEHOVER;
        hBitmap = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP1));
        hdc = GetDC(hwnd);
        hdcMem = CreateCompatibleDC(hdc);
        SelectObject(hdcMem, hBitmap);
        BitBlt(hdc, 375, 5, bmWidth, bmHeight, hdcMem, 0, 0, SRCCOPY);
        ReleaseDC(hwnd, hdcMem);
        ReleaseDC(hwnd, hdc);
        msLast = WM_MOUSELEAVE;
        break;
    case WM_CTLCOLORSTATIC://拦截WM_CTLCOLORSTATIC消息
        {
             
            if ((HWND)lParam == GetDlgItem(hwnd, IDC_2))//2
            {
                SetTextColor((HDC)wParam, RGB(165, 120, 120));
                SetBkMode((HDC)wParam, TRANSPARENT);
            }
            if ((HWND)lParam == GetDlgItem(hwnd, IDC_CLOSE))//2
            {
                SetTextColor((HDC)wParam, RGB(199, 0, 0));
                SetBkMode((HDC)wParam, TRANSPARENT);
            }
            if ((HWND)lParam == GetDlgItem(hwnd, IDC_MINIMIZE))//2
            {
                SetTextColor((HDC)wParam, RGB(199, 0, 0));
                SetBkMode((HDC)wParam, TRANSPARENT);
            }
            return (INT_PTR)GetStockObject((NULL_BRUSH));//返回一个空画刷(必须)
        }

    case WM_MOUSEMOVE:
    {
        if (BmpHitTest(hwnd, lParam) > 0)
        {
            if (msLast == WM_MOUSELEAVE) SendMessage(hwnd, WM_MOUSEHOVER, 0, 0);
        }
        else
        {
            if (msLast == WM_MOUSEHOVER) SendMessage(hwnd, WM_MOUSELEAVE, 0, 0);
        }
        TRACKMOUSEEVENT tme;
        tme.cbSize = sizeof(TRACKMOUSEEVENT);
        tme.dwFlags = TME_HOVER | TME_LEAVE;
        tme.dwHoverTime = 15;
      	tme.hwndTrack = hwnd;
        _TrackMouseEvent(&tme);
        break;
    }
    case WM_MOUSEHOVER:
    {// red
        hBitmap = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP3));
        hdc2 = GetDC(hwnd);
        hdcMem = CreateCompatibleDC(hdc);
        SelectObject(hdcMem, hBitmap);
        BitBlt(hdc, 375, 5, bmWidth, bmHeight, hdcMem, 0, 0, SRCCOPY);     // 11 显示位图  
        ReleaseDC(hwnd, hdcMem);
        ReleaseDC(hwnd, hdc);
        msLast = WM_MOUSEHOVER;
        break;
    }
    case WM_MOUSELEAVE:
    {// green
        hBitmap = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP1));
        hdc = GetDC(hwnd);
        hdcMem = CreateCompatibleDC(hdc);
        SelectObject(hdcMem, hBitmap);
        BitBlt(hdc, 375, 5, bmWidth, bmHeight, hdcMem, 0, 0, SRCCOPY);
        ReleaseDC(hwnd, hdcMem);
        ReleaseDC(hwnd, hdc);
        msLast = WM_MOUSELEAVE;
        break;
    }


    case WM_SIZE:
    {
        LONG_PTR Style = ::GetWindowLongPtr(hwnd, GWL_STYLE);
        Style = Style & ~WS_CAPTION & ~WS_SYSMENU & ~WS_SIZEBOX;
        ::SetWindowLongPtr(hwnd, GWL_STYLE, Style);
        break;
    }
    case WM_LBUTTONDOWN:
    {
        if (BmpHitTest(hwnd, lParam) > 0)
        {
            DeleteObject(hBitmap);
            DeleteObject(hFont);
            PostQuitMessage(0);
            break;
        }
        if (MINIMIZE1(hwnd, lParam) > 0)
        {
            SendMessage(hwnd, WM_SYSCOMMAND, SC_MINIMIZE, 0); // 最小化
            break;
        }
        // 移动 窗口 
        SendMessage(hwnd, WM_NCLBUTTONDOWN, HTCAPTION, 0);  //向窗口发送WM_NCLBUTTONDOWN消息，HTCAPTION 标题
        break;
    }
    case WM_COMMAND:
        {
            switch (LOWORD(wParam))
            {
                case IDC_2:
                    MessageBox(hwnd, "标题栏的消息响应（这明明是静态文本）xD", "提示", MB_OK | MB_ICONINFORMATION);
                break;
                case IDC_3:
                    MessageBox(hwnd, "您点击了按钮。(我需要告诉你你做了什么）", "提示", MB_OK | MB_ICONINFORMATION);
                break;
                case IDB_BITMAP1:
                {
                    case WM_DESTROY:
                    {
                    DeleteObject(hBitmap);                          // 14
                    DeleteObject(hFont);//删除所创建字体对象
                    PostQuitMessage(0);
                    break;
                    }
                }
                case IDC_MINIMIZE:
                {
                    SendMessage(hwnd, WM_SYSCOMMAND, SC_MINIMIZE, 0); // 最小化
                    break;
                }
                break;
            }
            break;
        }
    }
     
    return DefWindowProc(hwnd, uMsg, wParam, lParam);
}

末影小末EnderMo 2020-04-03

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把全部赋值为NULL之后代码可以通过生成了，但是没有效果，我再检查一下我是不是有什么东西搞错了

末影小末EnderMo 2020-04-03

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引用 24 楼 schlafenhamster 的回复:

1 增加一个 static int msLast=WM_MOUSELEAVE; 用来只重绘一次 2 改动


	case WM_MOUSEMOVE:
	{
		if(BmpHitTest(hwnd,lParam)>0)
		{
			if(msLast==WM_MOUSELEAVE) SendMessage(hwnd,WM_MOUSEHOVER,0,0);
		}
		else
		{
			if(msLast==WM_MOUSEHOVER) SendMessage(hwnd,WM_MOUSELEAVE,0,0);
		}
//		TRACKMOUSEEVENT tme;
//		tme.cbSize = sizeof(TRACKMOUSEEVENT);
//		tme.dwFlags = TME_HOVER | TME_LEAVE;
//		tme.dwHoverTime = 15;
//		tme.hwndTrack = hwnd;
//		_TrackMouseEvent(&tme);
		break;
	}
	case WM_MOUSEHOVER:
	{// red
        hBitmap = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP1));
		hdc = GetDC(hwnd);
		hdcMem = CreateCompatibleDC(hdc);
		SelectObject(hdcMem, hBitmap);
		BitBlt(hdc, 300, 5, bmWidth, bmHeight, hdcMem, 0, 0, SRCCOPY);     // 11 显示位图  
		ReleaseDC(hwnd,hdcMem);
		ReleaseDC(hwnd,hdc);
		msLast=WM_MOUSEHOVER;
		break;
	}
	case WM_MOUSELEAVE:
	{// green
		hBitmap1 = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP2));
        hdc = GetDC(hwnd);
        hdcMem = CreateCompatibleDC(hdc); 
        SelectObject(hdcMem, hBitmap1);
        BitBlt(hdc, 300, 5, bmWidth, bmHeight, hdcMem, 0, 0, SRCCOPY);  
        ReleaseDC(hwnd,hdcMem);
        ReleaseDC(hwnd,hdc);
		msLast=WM_MOUSELEAVE;
		break;
	}

注意： case WM_PAINT: 中画 leave 位图祝成功！

我有点抱歉。。。。还是出现未初始化的局部变量hInstance和一个出现在LINK的生成代码失败错误，在HDC里给hdc赋值NULL之后错误依然出现，#pragma了COMCTL32.LIB之后依然代码生成失败。。。

a67913463 2020-04-03

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case WM_PAINT: 中画 leave 位图

schlafenhamster 2020-04-03

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1 增加一个 static int msLast=WM_MOUSELEAVE;
用来只重绘一次
2 改动



	case WM_MOUSEMOVE:

	{

		if(BmpHitTest(hwnd,lParam)>0)

		{

			if(msLast==WM_MOUSELEAVE) SendMessage(hwnd,WM_MOUSEHOVER,0,0);

		}

		else

		{

			if(msLast==WM_MOUSEHOVER) SendMessage(hwnd,WM_MOUSELEAVE,0,0);

		}

//		TRACKMOUSEEVENT tme;

//		tme.cbSize = sizeof(TRACKMOUSEEVENT);

//		tme.dwFlags = TME_HOVER | TME_LEAVE;

//		tme.dwHoverTime = 15;

//		tme.hwndTrack = hwnd;

//		_TrackMouseEvent(&tme);

		break;

	}

	case WM_MOUSEHOVER:

	{// red

        hBitmap = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP1));

		hdc = GetDC(hwnd);

		hdcMem = CreateCompatibleDC(hdc);

		SelectObject(hdcMem, hBitmap);

		BitBlt(hdc, 300, 5, bmWidth, bmHeight, hdcMem, 0, 0, SRCCOPY);     // 11 显示位图  

		ReleaseDC(hwnd,hdcMem);

		ReleaseDC(hwnd,hdc);

		msLast=WM_MOUSEHOVER;

		break;

	}

	case WM_MOUSELEAVE:

	{// green

		hBitmap1 = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP2));

        hdc = GetDC(hwnd);

        hdcMem = CreateCompatibleDC(hdc); 

        SelectObject(hdcMem, hBitmap1);

        BitBlt(hdc, 300, 5, bmWidth, bmHeight, hdcMem, 0, 0, SRCCOPY);  

        ReleaseDC(hwnd,hdcMem);

        ReleaseDC(hwnd,hdc);

		msLast=WM_MOUSELEAVE;

		break;

	}

注意：
case WM_PAINT: 中画 leave 位图

祝成功！

qwqwqw408 2020-04-03

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可以使用自定义window类实现，相当于自定义控件，每个控件都有对应的处理方法，我们做的产品就是这么做的，虽然是wince的系统，但是gdi和window这块是通用的

schlafenhamster 2020-04-03

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#include <commctrl.h> // link 中加入 COMCTL32.LIB
case WM_MOUSEMOVE: 可能要改，你注意我的回答！

schlafenhamster 2020-04-03

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合并到 paint 的代码如下：：
1 case WM_CREATE:
中初始化 2个位图
//
hInstance = ((LPCREATESTRUCT)lParam)->hInstance; // 3
// green = leave
hBitmap1 = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP2)); // 4
// red = hover
hBitmap = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP1)); // 4
// same w h
GetObject(hBitmap1, sizeof(BITMAP), &bitmap); // 5
bmWidth = bitmap.bmWidth; // 6
bmHeight = bitmap.bmHeight;
2 增加一个变量
static HBITMAP hBitmap;
static HBITMAP hBitmap1;
static RECT bmrc;// 位图位置
3 初始化
bmWidth = bitmap.bmWidth; // 6
bmHeight = bitmap.bmHeight;
bmrc.left=300;
bmrc.top=5;
bmrc.right=bmrc.left+bmWidth;
bmrc.bottom=bmrc.top+bmHeight;
4 pait 根据 msLast 决定位图
case WM_PAINT:// leave
hdc = BeginPaint(hwnd, &ps);
hdcMem = CreateCompatibleDC(hdc);
if(msLast==WM_MOUSELEAVE)
SelectObject(hdcMem, hBitmap1); // green
else
SelectObject(hdcMem, hBitmap); // red
BitBlt(hdc, 300, 5, bmWidth, bmHeight, hdcMem, 0, 0, SRCCOPY);
DeleteDC(hdcMem);
EndPaint(hwnd, &ps);
break;
5 点击响应
case WM_MOUSEHOVER:
{// red
InvalidateRect(hwnd,&bmrc,true);
msLast=WM_MOUSEHOVER;
break;
}
case WM_MOUSELEAVE:
{// green
InvalidateRect(hwnd,&bmrc,true);
msLast=WM_MOUSELEAVE;
break;
}

末影小末EnderMo 2020-04-03