更改后如何将默认名称设置为窗口

How to set default name to window after changing?

本文关键字：设置 窗口 默认      更新时间：2023-10-16

>我有一个名为"Skylines"的窗口，我想在这个窗口中获取鼠标点击的坐标。我想将它们写在窗口的标题上，但我不明白释放鼠标按钮后如何更改窗口的名称。

现在我已经做到了：

void mouseOnSkylines(int evt, int x, int y, int flags, void* param)
{
    char sWindowName[100];
    HWND hWnd, hPar;
    switch(evt)
    {
    case CV_EVENT_LBUTTONDOWN:
        hWnd = (HWND)cvGetWindowHandle("Skylines");
        hPar = GetParent(hWnd);
        sprintf(sWindowName, "(%d, %d)", x, y);
        SetWindowText(hPar, sWindowName);
        break;
    case CV_EVENT_LBUTTONUP:
        hWnd = (HWND)cvGetWindowHandle("Skylines");
        hPar = GetParent(hWnd);
        sprintf(sWindowName, "Skylines");
        SetWindowText(hPar, sWindowName);
    }
}

如何才能做得更好？

在窗口中，您可以设置和重置OpenCV窗口的标题，如下所示：

#include<afxwin.h>
void mouse(int _event, int x, int y,int flags, void* param)
{
    static char old_name[256];
    if(_event==CV_EVENT_LBUTTONDOWN)
    {
        char* old_name_ptr = (char*)param;
        memcpy(old_name,old_name_ptr,256);
        char new_name[256];
        sprintf(new_name,"%d, %d",x,y);
        HWND hWnd = (HWND)cvGetWindowHandle(old_name);
        CWnd *wnd = CWnd::FromHandle(hWnd);
        CWnd *wndP = wnd->GetParent();
        wndP->SetWindowText(new_name);      
    }
    if(_event==CV_EVENT_LBUTTONUP)
    {
        char* old_name_ptr = (char*)param;
        HWND hWnd = (HWND)cvGetWindowHandle(old_name_ptr);
        CWnd *wnd = CWnd::FromHandle(hWnd);
        CWnd *wndP = wnd->GetParent();
        wndP->SetWindowText(old_name);      
    }
}

在主函数中：

IplImage* img = cvLoadImage(path);
char winTitle[256] = "Skylines";
cvNamedWindow(winTitle);
cvSetMouseCallback(winTitle,mouse,winTitle);
cvShowImage(winTitle,img);
cvWaitKey();
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