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我正在編寫一個程序,用於重命名AVI文件(添加擴展名 - 出於某種原因需要),然後從中獲取幀並將其存儲在BMP文件中。全局變量的行爲因不同功能而異
這裏是代碼的重要部分:
#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
}
現在,請給我解釋一下爲什麼我收到這樣的:
在EDIT1:正確的文件路徑(如「d:\測試\ testAVI .AVI「)
在EDIT2:‘îţîţîîţîţîîţîţî’等,以結束‘T™Öj8p’
我認爲它應該表現出同樣的字符串,因爲它從同讀全局變量。 我在做什麼錯?它是如何正確的?
謝謝
耶穌!我一直在想的只是指針而不是它指向的價值。多麼令人尷尬的時刻:D謝謝 – Smejki 2011-04-15 03:31:04
別擔心,每個人都有這樣的時刻。 :-) – 2011-04-15 15:08:28