C ++编辑框不能正确显示文本 [英] C++ Edit Boxes not displaying text properly

问题描述

我正在尝试选择文件并将文件路径放在编辑框中。当我这样做时，我得到一个乱码如穨<当实际路径类似于c：\\\333.conf



我还有两个其他编辑框用于选择有效的文件夹路径正确。



我有一个wchar_t *持有我要写入编辑框的路径。

I am trying to select a file and place the file path in an edit box. When i do so i get a garbled string like 穨< when the actual path is something like c:\config\333.conf

I have two other edit boxes that i am using to select a folder path that work correctly.

I have a wchar_t* holding the path that i want to write to the editbox.

INT_PTR CALLBACK DialogProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	
  switch(uMsg)
  {
  case WM_COMMAND:
    switch(LOWORD(wParam))
    {
    case IDCANCEL:
      SendMessage(hDlg, WM_CLOSE, 0, 0);
      return TRUE;
	case IDOK:
       //SetDlgItemText(hDlg, IDC_IMAGE_A_EDIT, _T("OK was pressed"));
		DoTune();
      return TRUE;
	case IDC_IMAGE_A_FOLDER_SELECT_BUTTON:
		str = OpenFolder();
        SetDlgItemText(hDlg, IDC_IMAGE_A_EDIT, str);//this works
      return TRUE;
	case IDC_IMAGE_B_FOLDER_SELECT_BUTTON:
		str = OpenFolder();
        SetDlgItemText(hDlg, IDC_IMAGE_B_EDIT, str);//so does this
      return TRUE;
	case IDC_CONF_FILE_SELECT_BUTTON:
		wchar_t* filter = L"CONF Files (*.conf)\0*.conf\0";
		str = OpenFileName(filter, NULL);
		SetDlgItemTextW(hDlg, IDC_CONF_EDIT, str); //this doesn't work
      return TRUE;
    }
    break;

  case WM_CLOSE:
    if(MessageBox(hDlg, TEXT("Close the program?"), TEXT("Close"),
      MB_ICONQUESTION | MB_YESNO) == IDYES)
    {
      DestroyWindow(hDlg);
    }
    return TRUE;

  case WM_DESTROY:
    PostQuitMessage(0);
    return TRUE;
  }

  return FALSE;
}

//main.h
#include <windows.h>
#include <commctrl.h>
#include <tchar.h>
#include "resource.h"
#include <string>
#include <commdlg.h>
#include <shlobj.h>
#include <stdio.h>
#include <strsafe.h>
#include <comdef.h>
#include <string.h>

wchar_t* str;
//file path variable
char* CONFIG_PATH_ANALYSIS;
int numFiles;

void DoTune();
void DisplayErrorBox(LPTSTR lpszFunction);
wchar_t* OpenFolder();
void RunAnalysis(wchar_t* Folder);
wchar_t* ConvertCharArrayToLPCWSTR(const char* charArray);
wchar_t* OpenFileName(wchar_t *filter, HWND owner);

typedef int (__cdecl *ANALYZE_PROC)(char *, char *, char *,char *, bool, bool);
typedef int (__cdecl *GETAVERAGE_PROC)(char *, char *);
typedef int (__cdecl *VERIFY_PROC)(char *, char *);

HINSTANCE           hFoo;
HWND                hDlg;
GETAVERAGE_PROC     getAverageProcess;
ANALYZE_PROC        analyzeProcess;
VERIFY_PROC         verifyProcess;

//OpenFileName Definition
wchar_t* OpenFileName(wchar_t *filter, HWND owner) {
    OPENFILENAME ofn;
    wchar_t fileName[MAX_PATH] = L"";
    ZeroMemory(&ofn, sizeof(ofn));
    ofn.lStructSize = sizeof(OPENFILENAME);
    ofn.hwndOwner = owner;
    ofn.lpstrFilter = filter;
    ofn.lpstrFile = fileName;
    ofn.nMaxFile = MAX_PATH;
    ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;
    ofn.lpstrDefExt = NULL;
    wchar_t* fileNameStr;

    if ( GetOpenFileName(&ofn) )
        fileNameStr = fileName;

    return fileNameStr;
}

因为你可以看到它非常简单，我不是C ++的新手所以我想我错过了一些简单的东西。此外，我已经验证str在传递给SetDlgItemText函数之前具有正确的路径。



一如既往，我感谢任何输入。

as you can see it's pretty straightforward and i am not new to C++ so i figure i am missing something simple. Also, i have verified that str has the correct path before it gets passed to the SetDlgItemText function.

As always, i appreciate any input.

推荐答案

我想你忘了把char转换成wchar所以...

你知道char是8位而wchar是16位...

所以2，将8位信息放入1个wchar变量中。



i不知道你在哪里有垃圾对话框或主窗口的编辑框？



但是我认为错误就在这里

i think you forget convert char to wchar so...
you know that char is 8 bit and wchar is 16 bit...
so 2, 8 bit information is put in 1 wchar variable.

i don't know where you have garbage in dialog box or in edit box in main window?

but i think mistake is here

if ( GetOpenFileName(&ofn) )
        fileNameStr = fileName;

抱歉信息不好:-D

sorry for poor info :-D

我有一个解决方案，但我在遗憾地解释它为何起作用。我将OpenFileName函数从原始格式更改为此格式，并且完美运行。

I have a solution but i am at a loss to explain why it works. I changed the OpenFileName function from its original form to this and it works perfectly.

char* OpenFileName(char *filter = "Conf Files (*.conf)\0*.conf\0", HWND owner = NULL) {  
	OPENFILENAME ofn;
	char fileName[MAX_PATH] = "";
	ZeroMemory(&ofn, sizeof(ofn));
	ofn.lStructSize = sizeof(OPENFILENAME);
	ofn.hwndOwner = owner;
	ofn.lpstrFilter = filter;
	ofn.lpstrFile = fileName;
	ofn.nMaxFile = MAX_PATH;
	ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;
	ofn.lpstrDefExt = "";
	char* fileNameStr;
	
	if ( GetOpenFileName(&ofn) )
		fileNameStr = fileName;
  
	return fileNameStr;
}

所以基本上只是将wchar_t改为char工作;但是，建议的标准是在Windows应用程序中使用wchar_t over char，这样就可以了。我仍然想知道为什么这会在另一个失败的情况下起作用。

So basically just changing wchar_t to char worked; however, the recommended standard is to use wchar_t over char in a windows application so this is going a bit against that. I would still like to know why this works where the other failed.

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