GetOpenFileName --打开文件通用对话框

BOOL GetOpenFileName(     
    LPOPENFILENAME lpofn );

使用该函数需要包含 commdlg.h 头文件

#include <Commdlg.h>

BOOL  OpenFileDialog(HWND hWnd)
{
OPENFILENAME ofn;       // common dialog box structure
TCHAR szFile[MAX_PATH];       // buffer for file name
// Initialize OPENFILENAME
ZeroMemory(&ofn, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = hWnd;
ofn.lpstrFile = szFile;
//
// Set lpstrFile[0] to '\0' so that GetOpenFileName does not
// use the contents of szFile to initialize itself.
//
ofn.lpstrFile[0] = '\0';
ofn.nMaxFile = sizeof(szFile);
ofn.lpstrFilter = TEXT("Image files (*.jpg;*.bmp)\0*.jpg;*.bmp\0\0");
ofn.nFilterIndex = 1;
ofn.lpstrFileTitle = NULL;
ofn.nMaxFileTitle = 0;
ofn.lpstrInitialDir = NULL;
ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
return GetOpenFileName((LPOPENFILENAME)&ofn);
}