从编辑控件(Pure Win32 API)获取文本

Question

我一直试图让这个工作年龄相似,但没有用(悲伤的脸).

int iChars = GetWindowTextLength (GetDlgItem(handle,ID))+1; // Room for '\0'
char* pstrText;
pstrText = (char*) malloc (sizeof(char)*iChars);
if (pstrText != NULL) {
    //GetWindowText (GetDlgItem(handle,ID), pstrText, iChars);
        GetDlgItemText(handle,ID,pstrText,iChars);
}
return pstrText; // Memory gets freed after it returns

工作范例:

char* MWC::System::TextBox::GetText(){
    int len = SendMessage(handle, WM_GETTEXTLENGTH, 0, 0);
    char* buffer = new char[len];
    SendMessage(handle, WM_GETTEXT, (WPARAM)len+1, (LPARAM)buffer);
    return buffer;
}

Answer 1

这里的wParam参数错误:

SendMessage(handle, WM_GETTEXT, (WPARAM)len, (LPARAM)buffer);

你应该通过len+1零终止符来传递.