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我正在编写一个程序,用于重命名AVI文件(添加扩展名 - 出于某种原因需要),然后从中获取帧并将其存储在BMP文件中。全局变量的行为因不同功能而异
这里是代码的重要部分:
#include "stdafx.h"
#include "ImageProcessor2.h"
#include <windows.h>
#include <Commdlg.h>
#include <Commctrl.h>
#include <stdio.h>
#include <string>
#include "vfw.h"
#include <atlstr.h>
// Global Variables...
HINSTANCE g_hInst;
LPSTR selectedAVI=NULL;
INT_PTR CALLBACK DialogProc(HWND, UINT, WPARAM, LPARAM);
void OpenDialog(HWND);
void GetFrame(HWND);
int APIENTRY _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPTSTR lpCmdLine, int nCmdShow)
{
g_hInst = hInstance;
DialogBox(hInstance, MAKEINTRESOURCE(IDD_MAIN), NULL,(DLGPROC)DialogProc);
return 0;
}
INT_PTR CALLBACK DialogProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_INITDIALOG:
SetClassLongPtr(hWnd, GCLP_HICONSM,
(LONG_PTR)LoadIcon(g_hInst, MAKEINTRESOURCE(IDI_IMAGEPROCESSOR2)));
break;
case WM_COMMAND:
switch (LOWORD(wParam))
{
case IDCANCEL:
EndDialog(hWnd, LOWORD(wParam));
break;
case IDB_LOADVID:
OpenDialog(hWnd);
break;
case IDB_GETFRAME:
if (selectedAVI==0)
{
MessageBox(NULL, "Select the file by pressing Load button first", "Info", MB_OK);
break;
}
else
GetFrame(hWnd);
break;
}
break;
break;
}
return FALSE;
}
void OpenDialog(HWND hWnd)
{
OPENFILENAME ofn;
TCHAR szFile[MAX_PATH];
char* renamedfile;
ZeroMemory(&ofn, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.lpstrFile = szFile;
ofn.lpstrFile[0] = '\0';
ofn.hwndOwner = hWnd;
ofn.nMaxFile = sizeof(szFile);
ofn.lpstrFilter = TEXT("All files(*.*)\0*.*\0");
ofn.nFilterIndex = 1;
ofn.lpstrInitialDir = NULL;
ofn.lpstrFileTitle = NULL;
ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
if (GetOpenFileName(&ofn))
{
//call to rename function
ofn.lpstrFile=renamedfile;
MCIWndCreate(GetDlgItem(hWnd, IDC_ANIRENDER), (HINSTANCE)g_hInst,WS_CHILD|WS_VISIBLE|WS_SYSMENU|MCIWNDF_NOOPEN|MCIWNDF_NOMENU|MCIWNDF_NOTIFYALL, ofn.lpstrFile);
selectedAVI=ofn.lpstrFile;
SetDlgItemTextA(hWnd, IDC_EDIT1, selectedAVI);
}
}
//rename function is here
void GetFrame(HWND hWnd)
{
LONG hr;
PAVIFILE pfile;
SetDlgItemTextA(hWnd, IDC_EDIT2, selectedAVI);
AVIFileInit(); // opens AVIFile library
//further AVI processing functions are here
AVIFileExit(); // releases AVIFile library
}
现在,请给我解释一下为什么我收到这样的:
在EDIT1:正确的文件路径(如“d:\测试\ testAVI .AVI“)
在EDIT2:‘îţîţîîţîţîîţîţî’等,以结束‘T™Öj8p’
我认为它应该表现出同样的字符串,因为它从同读全局变量。 我在做什么错?它是如何正确的?
谢谢
耶稣!我一直在想的只是指针而不是它指向的价值。多么令人尴尬的时刻:D谢谢 – Smejki 2011-04-15 03:31:04
别担心,每个人都有这样的时刻。 :-) – 2011-04-15 15:08:28