c++ - 禁用按钮功能(Wx 小部件)

Question

所以我正在使用 WxDev 框架来开发我们程序的 GUI。 所以它有两个按钮，“上传”和“分析”。

顺序应该是用户上传图片。上传后，他可以单击“分析”按钮。现在，一旦他点击分析，我就想禁用它。只有在有新图像要分析时才会启用该按钮。

这是我拥有的按钮的代码，尽管它可能无关紧要。

上传:

void NBA_Jersey_RecognitionFrm::WxButton1Click(wxCommandEvent& event)
{
 openIMGFileDialog->ShowModal();
    if (openIMGFileDialog->GetPath().IsEmpty())
    {
        return;
    }

    imageopen = imgFile.LoadFile(openIMGFileDialog->GetPath(), wxBITMAP_TYPE_ANY);

    int h = imgFile.GetHeight();
    int w = imgFile.GetWidth();

    pic.Create(w,h);

        for (int x = 0; x < w; x++)
        {
             for (int y = 0; y < h; y++)
            {
                pic.SetRGB(x, y, 240, 240, 240);
            }
        }

    if (300 >= (h*300/w))
    {       
        displayIMG->SetBitmap(pic.Scale(300,h*300/w));
        displayIMG->SetBitmap(imgFile.Scale(300,h*300/w));
    } 
    else
    {
        displayIMG->SetBitmap(pic.Scale(w*300/h,300));
        displayIMG->SetBitmap(imgFile.Scale(w*300/h,300));
    }

}

这是我的 ANALYZE 按钮的摘录:

void NBA_Jersey_RecognitionFrm::WxButton1Click0(wxCommandEvent& event)
{
    ofstream resultsFile;

    stringstream ss;
    string s;

    int height = imgFile.GetHeight();
    int width = imgFile.GetWidth();

    RedVal = new int* [width];
    GreenVal = new int* [width];
    BlueVal= new int* [width];

    for(int i=0; i<width; i++) {
        RedVal[i] = new int[height];
        GreenVal[i] = new int[height];
        BlueVal[i] = new int[height];
    }


    //int RedVal[width][height];
    //int GreenVal[width][height];
    //int BlueVal[width][height];

    resultsFile.open("results.txt");
    //resultsFile << "x,y,Red,Green,Blue \n";


    for(int h=0; h<height; h++) {
        for(int w=0; w<width; w++) {

            RedVal[w][h]=imgFile.GetRed(w,h);
            GreenVal[w][h]=imgFile.GetGreen(w,h);
            BlueVal[w][h]=imgFile.GetBlue(w,h);

            //ss << h << "," << w << "," << RedVal[0][h] << "," << GreenVal[0][h] << "," << BlueVal[0][h] <<"\n";
            //resultsFile << ss.str();
            //resultsFile << h << "," << w << "," << RedVal[w][h] << "," << GreenVal[w][h] << "," << BlueVal[w][h] <<"\n";
        }

    }

WxDev C++ 中是否有关于禁用按钮的内置函数？或者我应该在我的代码中添加什么？谢谢。

Answer 1

您可以像这样禁用按钮(和大多数控件):

void NBA_Jersey_RecognitionFrm::WxButton1Click0(wxCommandEvent& event)
{
    m_analyzeButton->Enable(false);
    ...

然后重新启用它:

void NBA_Jersey_RecognitionFrm::WxButton1Click(wxCommandEvent& event)
{
 openIMGFileDialog->ShowModal();
    if (openIMGFileDialog->GetPath().IsEmpty())
    {
        return;
    }
    m_analyzeButton->Enable(true);
    ...

将“m_analyzeButton”替换为您的按钮名称。