[Original] dynamic dialog box creation without resource files

Author: Zhu Jincan

Source: http://blog.csdn.net/clever101

 

Generally, to create a dialog box in Windows programming, you must first define a dialog box resource. Can I leave the resource source file alone in the code creation dialog box? I searched for some materials at night and studied them for a moment.

 

I wrote a KDialog and the code is as follows (the Code has some comments, and I believe you can basically understand them ):

Header file code:

// Kdialog. h # ifndef dow# define KDIALOG_H_INCLUDED # define ID_HELP 150 # define ID_EDIT 180 # define ID_TEXT 200 class KDialog {public: KDialog (HINSTANCE hinst, HWND hwndOwner );~ KDialog (); virtual INT_PTR DoModal (); protected: // The message processing function registered in the API. It cannot be a member function, because the member function has this pointer static bool callback DialogProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam); private: HWND m_hOwnerWnd; HINSTANCE m_hInst;}; # endif/CALLBACK

Code of the Cpp file:

# Include "kdialog. h "# include" resource. h "bool callback DialogProc (HWND, UINT, WPARAM, LPARAM); LPWORD lpwAlign (LPWORD lpIn) {ULONG ul; ul = (ULONG) lpIn; ul + = 3; ul> = 2; ul <= 2; return (LPWORD) ul;} KDialog: KDialog (HINSTANCE hinst, HWND hwndOwner) {m_hInst = hinst; m_hOwnerWnd = hwndOwner ;} KDialog ::~ KDialog () {} char nEditTwo [128] = "enter a string here. "; bool callback KDialog: DialogProc (HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam) {switch (uMsg) {case when: SetDlgItemText (hDlg, ID_EDIT, nEditTwo ); return TRUE; case WM_COMMAND: switch (LOWORD (wParam) {case ID_EDIT: GetDlgItemText (hDlg, ID_EDIT, nEditTwo, 127); return TRUE; case ID_HELP: MessageBox (NULL, nEditTwo, "input data", MB_ OK | MB_SYSTEMMODAL | MB_NOFOCUS); return TRUE; case IDOK: EndDialog (hDlg, 0); return TRUE;} break; case WM_CLOSE: EndDialog (hDlg, 0); return TRUE; default: break;} return FALSE;} INT_PTR KDialog: DoModal () {HGLOBAL hgbl; LPDLGTEMPLATE lpdt; LPDLGITEMTEMPLATE lpdit; LPWORD lpw; LPWSTR lpwsz; LRESULT ret; int nchar; hgbl = GlobalAlloc (GMEM_ZEROINIT, 1024); if (! Hgbl) return-1; lpdt = (LPDLGTEMPLATE) GlobalLock (hgbl); // Define a dialog box. lpdt-> style = WS_POPUP | WS_BORDER | WS_SYSMENU | DS_MODALFRAME | WS_CAPTION; lpdt-> cdit = 3; // number of controls lpdt-> x = 10; lpdt-> y = 10; lpdt-> cx = 100; lpdt-> cy = 70; lpw = (LPWORD) (lpdt + 1); * lpw ++ = 0; // no menu * lpw ++ = 0; // predefined dialog box class (by default) lpwsz = (LPWSTR) lpw; nchar = 1 + MultiByteToWideChar (CP_ACP, 0, "Memory dialog box",-1, lpwsz, 50); lpw + = nchar; // --------------------- // Define an OK button. // ----------------------- lpw = lpwAlign (lpw); lpdit = (LPDLGITEMTEMPLATE) lpw; lpdit-> x = 10; lpdit-> y = 50; lpdit-> cx = 80; lpdit-> cy = 15; lpdit-> id = IDOK; // OK button identifier lpdit-> style = WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON; lpw = (LPWORD) (lpdit + 1); * lpw ++ = 0 xFFFF; * lpw ++ = 0x0080; // button class lpwsz = (LPWSTR) lpw; nchar = 1 + MultiByteToWideChar (CP_ACP, 0, "quit",-1, lpwsz, 50); lpw + = nchar; * lpw ++ = 0; // no creation data // ----------------------- // Define a Help button. // ----------------------- lpw = lpwAlign (lpw); lpdit = (LPDLGITEMTEMPLATE) lpw; lpdit-> x = 10; lpdit-> y = 30; lpdit-> cx = 80; lpdit-> cy = 15; lpdit-> id = ID_HELP; // Help button identifier lpdit-> style = WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON; lpw = (LPWORD) (lpdit + 1); * lpw ++ = 0 xFFFF; * lpw ++ = 0x0080; // button class atom lpwsz = (LPWSTR) lpw; nchar = 1 + MultiByteToWideChar (CP_ACP, 0, "Show input",-1, lpwsz, 50); lpw + = nchar; * lpw ++ = 0; // no creation data // ----------------------- // Define a EDIT. // ----------------------- lpw = lpwAlign (lpw); lpdit = (LPDLGITEMTEMPLATE) lpw; lpdit-> x = 10; lpdit-> y = 10; lpdit-> cx = 80; lpdit-> cy = 12; lpdit-> id = ID_EDIT; // Help button identifier lpdit-> style = ES_LEFT | WS_BORDER | WS_TABSTOP | WS_CHILD | WS_VISIBLE; lpw = (LPWORD) (lpdit + 1); * lpw ++ = 0 xFFFF; * lpw ++ = 0x0081; // edit class atom * lpw ++ = 0; // no creation data GlobalUnlock (hgbl); ret = DialogBoxIndirect (m_hInst, (LPDLGTEMPLATE) hgbl, m_hOwnerWnd, (DLGPROC) DialogProc); GlobalFree (hgbl); return ret ;}

The external call method is also very simple (you can pass in the application handle and the owner window handle of the dialog box ):

             KDialog dlg(m_hInst,m_hWnd);              dlg.DoModal();

The Mode dialog box is created above. The code for creating a non-mode dialog box is as follows:

BOOL KDialog: DoModeless () {HGLOBAL hgbl; LPDLGTEMPLATE lpdt; LPDLGITEMTEMPLATE lpdit; LPWORD lpw; LPWSTR lpwsz; LRESULT ret; int nchar; hgbl = GlobalAlloc (cost, 1024 ); if (! Hgbl) return FALSE; lpdt = (LPDLGTEMPLATE) GlobalLock (hgbl); // Define a dialog box. lpdt-> style = WS_POPUP | WS_BORDER | WS_SYSMENU | DS_MODALFRAME | WS_CAPTION; lpdt-> cdit = 3; // number of controls lpdt-> x = 10; lpdt-> y = 10; lpdt-> cx = 100; lpdt-> cy = 70; lpw = (LPWORD) (lpdt + 1); * lpw ++ = 0; // no menu * lpw ++ = 0; // predefined dialog box class (by default) lpwsz = (LPWSTR) lpw; nchar = 1 + MultiByteToWideChar (CP_ACP, 0, "Memory dialog box",-1, lpwsz, 50); lpw + = nchar; // --------------------- // Define an OK button. // ----------------------- lpw = lpwAlign (lpw); lpdit = (LPDLGITEMTEMPLATE) lpw; lpdit-> x = 10; lpdit-> y = 50; lpdit-> cx = 80; lpdit-> cy = 15; lpdit-> id = IDOK; // OK button identifier lpdit-> style = WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON; lpw = (LPWORD) (lpdit + 1); * lpw ++ = 0 xFFFF; * lpw ++ = 0x0080; // button class lpwsz = (LPWSTR) lpw; nchar = 1 + MultiByteToWideChar (CP_ACP, 0, "quit",-1, lpwsz, 50); lpw + = nchar; * lpw ++ = 0; // no creation data // ----------------------- // Define a Help button. // ----------------------- lpw = lpwAlign (lpw); lpdit = (LPDLGITEMTEMPLATE) lpw; lpdit-> x = 10; lpdit-> y = 30; lpdit-> cx = 80; lpdit-> cy = 15; lpdit-> id = ID_HELP; // Help button identifier lpdit-> style = WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON; lpw = (LPWORD) (lpdit + 1); * lpw ++ = 0 xFFFF; * lpw ++ = 0x0080; // button class atom lpwsz = (LPWSTR) lpw; nchar = 1 + MultiByteToWideChar (CP_ACP, 0, "Show input",-1, lpwsz, 50); lpw + = nchar; * lpw ++ = 0; // no creation data // ----------------------- // Define a EDIT. // ----------------------- lpw = lpwAlign (lpw); lpdit = (LPDLGITEMTEMPLATE) lpw; lpdit-> x = 10; lpdit-> y = 10; lpdit-> cx = 80; lpdit-> cy = 12; lpdit-> id = ID_EDIT; // Help button identifier lpdit-> style = ES_LEFT | WS_BORDER | WS_TABSTOP | WS_CHILD | WS_VISIBLE; lpw = (LPWORD) (lpdit + 1); * lpw ++ = 0 xFFFF; * lpw ++ = 0x0081; // edit class atom * lpw ++ = 0; // no creation data GlobalUnlock (hgbl); HWND hDlg = CreateDialogIndirect (m_hInst, (LPDLGTEMPLATE) hgbl, fingerprint, (DLGPROC) DialogProc); if (NULL = hDlg) return FALSE;: ShowWindow (hDlg, SW_SHOW); GlobalFree (hgbl); return TRUE ;}

As follows:

 

For details about the implementation principle, refer to this article: the dialog box template, RegexTest, and related articles on the Microsoft Official Website: UsingDialog Boxes. In addition, an example of CodeProject: UsingDialog Templates to create an InputBox () in C ++

Author: clever101 posted on 23:53:34 Original article link Read: 332 comment: 0 view comment