Question

我需要转换：

http://msdn.microsoft.com/en-us/library/windows/desktop/ms646839(v=vs.85).aspx

lpstrFileTitle
Type: LPTSTR
The file name and extension (without path information) of the selected file. This member can be NULL.

即使在MSVC ++ 2012 Express中它也说它的LPSTR。

要

http://msdn.microsoft.com/en-us/library/windows/desktop/bb172802(v=vs.85).aspx

pSrcFile [in]
Type: LPCTSTR
Pointer to a string that specifies the filename. If the compiler settings require Unicode, the data type LPCTSTR resolves to LPCWSTR. Otherwise, the string data type resolves to LPCSTR. See Remarks.

我非常欣赏这一点。：）

char szFileName[MAX_PATH] = {0};
char szFileTitleName[MAX_PATH] = {0};
HRESULT hr = S_OK;
RtlZeroMemory(&gc.ofn, sizeof(gc.ofn));

gc.ofn.lStructSize      =   sizeof(gc.ofn);
gc.ofn.hwndOwner        =   hWnd;
gc.ofn.lpstrFilter      =   "All Image Files\0"              "*.bmp;*.dib;*.wdp;*.mdp;*.hdp;*.gif;*.png;*.jpg;*.jpeg;*.tif;*.ico\0"
"Windows Bitmap\0"               "*.bmp;*.dib\0"
"High Definition Photo\0"        "*.wdp;*.mdp;*.hdp\0"
"Graphics Interchange Format\0"  "*.gif\0"
"Portable Network Graphics\0"    "*.png\0"
"JPEG File Interchange Format\0" "*.jpg;*.jpeg\0"
"Tiff File\0"                    "*.tif\0"
"Icon\0"                         "*.ico\0"
"All Files\0"                    "*.*\0"
"\0";
gc.ofn.nMaxFileTitle = MAX_PATH;
gc.ofn.lpstrFileTitle = gc.szFileTitleName; // its a char
gc.ofn.lpstrFile       = szFileName;
gc.ofn.nMaxFile        = MAX_PATH;
gc.ofn.lpstrTitle      = "Open Image";
gc.ofn.Flags           = OFN_FILEMUSTEXIST | OFN_PATHMUSTEXIST;

if(GetOpenFileName(&gc.ofn)) {
gc.render_on = true;
}

D3DXCreateTextureFromFileEx (d3dDevice, gc.szFileTitleName , D3DX_DEFAULT_NONPOW2, D3DX_DEFAULT_NONPOW2, 0, 0,
        D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, D3DX_DEFAULT, D3DX_DEFAULT,
        colorkey, &init_map->image_info, NULL, &init_map->texture_buffer)

这将有一个空白图像。我已经在GetOpenFile之后用消息框测试了它，它返回很棒。

MessageBoxA ( NULL , gc.ofn.lpstrFileTitle , "" , 0 );

但在D3DXCreateTextureFromFileEx之前，它搞砸了。

只需将char存储到gc.szFileTitleName中。不知道为什么另一种方式超出了范围...

Answer 1

LPCTSTR只是const的{{1}}版本。这种类型的转换是标准转换，因此您无需明确执行任何操作即可获得所需内容。您的错误必须在其他地方。

除非你以某种方式使用LPTSTR设置编译一段代码，否则编写一些代码...

Answer 2

GetOpenFileName()，D3DXCreateTextureFromFileEx()和MessageBox()都处理基于TCHAR的字符串，但您实际上并未在代码中使用TCHAR。试试这个：

TCHAR szFileName[MAX_PATH] = {0};
TCHAR szFileTitleName[MAX_PATH] = {0};
HRESULT hr = S_OK;
RtlZeroMemory(&gc.ofn, sizeof(gc.ofn));

gc.ofn.lStructSize      =   sizeof(gc.ofn);
gc.ofn.hwndOwner        =   hWnd;
gc.ofn.lpstrFilter      =   TEXT("All Image Files\0")              TEXT("*.bmp;*.dib;*.wdp;*.mdp;*.hdp;*.gif;*.png;*.jpg;*.jpeg;*.tif;*.ico\0")
                            TEXT("Windows Bitmap\0")               TEXT("*.bmp;*.dib\0")
                            TEXT("High Definition Photo\0")        TEXT("*.wdp;*.mdp;*.hdp\0")
                            TEXT("Graphics Interchange Format\0")  TEXT("*.gif\0")
                            TEXT("Portable Network Graphics\0")    TEXT("*.png\0")
                            TEXT("JPEG File Interchange Format\0") TEXT("*.jpg;*.jpeg\0")
                            TEXT("Tiff File\0")                    TEXT("*.tif\0")
                            TEXT("Icon\0")                         TEXT("*.ico\0")
                            TEXT("All Files\0")                    TEXT("*.*\0")
                            TEXT("\0");
gc.ofn.nMaxFileTitle = MAX_PATH;
gc.ofn.lpstrFileTitle = gc.szFileTitleName;
gc.ofn.lpstrFile       = szFileName;
gc.ofn.nMaxFile        = MAX_PATH;
gc.ofn.lpstrTitle      = TEXT("Open Image");
gc.ofn.Flags           = OFN_FILEMUSTEXIST | OFN_PATHMUSTEXIST;

if(GetOpenFileName(&gc.ofn)) {
    gc.render_on = true;
}

D3DXCreateTextureFromFileEx (d3dDevice, gc.szFileTitleName , D3DX_DEFAULT_NONPOW2, D3DX_DEFAULT_NONPOW2, 0, 0, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, D3DX_DEFAULT, D3DX_DEFAULT, colorkey, &init_map->image_info, NULL, &init_map->texture_buffer)

MessageBox(NULL, gc.ofn.lpstrFileTitle, TEXT(""), 0);

如何将LPTSTR转换为LPCTSTR？

2 个答案: