OpenFileName with hook results in CDERR_DIALOGFAILURE
I'm getting an error CDERR_DIALOGFAILURE from GetOpenFileName. here's the code...
// In WndProc
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static HINSTANCE hInstance;
switch (message)
{
case WM_CREATE:
hInstance = (HINSTANCE) GetWindowLong (hWnd, GWL_HINSTANCE);
// In message processing within WndProc
case ID_READ_LOG_FILE:
{
OPENFILENAME ofn;
char fn[MAX_PATH]="\0";
char filter[32]="Text Files\0*.TXT;\0\0";
char title[]="Open Log File";
char defext[]="TXT";
int status;
ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = hWnd;
ofn.hInstance = hInstance;
ofn.lpstrFilter = filter;
ofn.nFilterIndex = 0;
ofn.lpstrCustomFilter = NULL ;
ofn.nMaxCustFilter = 0 ;
ofn.lpstrFile = fn;
ofn.nMaxFile = sizeof(fn);
ofn.lpstrFileTitle = NULL;
if (ReadLogFileLastDir[0] == '\0')
{
SHGetSpecialFolderPath (NULL,ReadLogFileLastDir,0x0005,false);
};
ofn.lpstrInitialDir = ReadLogFileLastDir;
ofn.lpstrTitle = title;
ofn.Flags = OFN_FILEMUSTEXIST |
OFN_PATHMUSTEXIST |
OFN_EXPLORER |
OFN_ENABLETEMPLATE |
OFN_ENABLESIZING |
OFN_ENABLEHOOK ;
ofn.lpstrDefExt = NULL;
ofn.lpfnHook = HookFileOpen;
ofn.lCustData = 1234; // just for fun
ofn.lpTemplateName = MAKEINTRESOURCE(IDD_HOOKFILEOPEN);
ofn.nFileOffset = 0 ;
ofn.nFileExtension = 0 ;
ofn.lpstrDefExt = defext;
status = GetOpenFileName (&ofn);
if (status == 0)
{
DWORD iStat, z;
iStat = CommDlgExtendedError();
if (iStat == CDE开发者_如何学运维RR_DIALOGFAILURE)
// The dialog procedure looks like this but never gets called.
UINT_PTR CALLBACK HookFileOpen (HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
I don't know exactly what is needed but I modified the dialog making it a child with clip siblings and eliminated all other styles and extended styles and now it works.
精彩评论