不使用资源文件动态创建对话框的做法
2014-06-03 15:08
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作者：朱金灿
一般而言，在 Windows编程中创建对话框需要先定义一个对话框资源。我想能不能不用资源文件单纯通过代码创建对话框呢？晚上搜索了一些资料，研究了一下，基本实现了。
我写了一个KDialog，代码如下（代码中有一些注释，相信大家能基本看懂）：
头文件的代码：
[cpp] view
plaincopy
<span style="font-size:16px;">// kdialog.h
#ifndef KDIALOG_H_INCLUDED
#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:
// API中注册的消息处理函数，不能是成员函数，因为成员函数有this指针
static BOOL CALLBACK DialogProc(HWND hWnd,
UINT uMsg, WPARAM wParam, LPARAM lParam);
private:
HWND m_hOwnerWnd;
HINSTANCE m_hInst;
};
#endif // KDIALOG_H_INCLUDED
</span>
Cpp文件的代码：
[cpp] view
plaincopy
<span style="font-size:16px;">#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]= "从这儿输入字符串." ;
BOOL CALLBACK KDialog::DialogProc(HWND hDlg,
UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_INITDIALOG :
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, "输入数据", 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, "内存对话框", -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++ = 0xFFFF;
*lpw++ = 0x0080; // button class
lpwsz = (LPWSTR) lpw;
nchar = 1+MultiByteToWideChar (CP_ACP, 0, "退出", -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++ = 0xFFFF;
*lpw++ = 0x0080; // button class atom
lpwsz = (LPWSTR) lpw;
nchar = 1+MultiByteToWideChar (CP_ACP, 0, "显示输入", -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++ = 0xFFFF;
*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;
}
</span>
外部调用的方法也很简单（把应用程序句柄和对话框的所有者窗口句柄传进来即可）：
[cpp] view
plaincopy
<span style="font-size:16px;"> KDialog dlg(m_hInst,m_hWnd);
dlg.DoModal();
</span>
上面创建的是模式对话框，下面是创建非模式对话框的代码：
[cpp] view
plaincopy
BOOL KDialog::DoModeless()
{
HGLOBAL hgbl;
LPDLGTEMPLATE lpdt;
LPDLGITEMTEMPLATE lpdit;
LPWORD lpw;
LPWSTR lpwsz;
LRESULT ret;
int nchar;
hgbl = GlobalAlloc(GMEM_ZEROINIT, 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, "内存对话框", -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++ = 0xFFFF;
*lpw++ = 0x0080; // button class
lpwsz = (LPWSTR) lpw;
nchar = 1+MultiByteToWideChar (CP_ACP, 0, "退出", -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++ = 0xFFFF;
*lpw++ = 0x0080; // button class atom
lpwsz = (LPWSTR) lpw;
nchar = 1+MultiByteToWideChar (CP_ACP, 0, "显示输入", -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++ = 0xFFFF;
*lpw++ = 0x0081; // edit class atom
*lpw++ = 0; // no creation data
GlobalUnlock(hgbl);
HWND hDlg = CreateDialogIndirect(m_hInst,
(LPDLGTEMPLATE) hgbl,
m_hOwnerWnd,
(DLGPROC) DialogProc);
if(NULL==hDlg)
return FALSE;
::ShowWindow(hDlg,SW_SHOW);
GlobalFree(hgbl);
return TRUE;
}
效果图如下：
一般而言，在 Windows编程中创建对话框需要先定义一个对话框资源。我想能不能不用资源文件单纯通过代码创建对话框呢？晚上搜索了一些资料，研究了一下，基本实现了。
我写了一个KDialog，代码如下（代码中有一些注释，相信大家能基本看懂）：
头文件的代码：
[cpp] view
plaincopy
<span style="font-size:16px;">// kdialog.h
#ifndef KDIALOG_H_INCLUDED
#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:
// API中注册的消息处理函数，不能是成员函数，因为成员函数有this指针
static BOOL CALLBACK DialogProc(HWND hWnd,
UINT uMsg, WPARAM wParam, LPARAM lParam);
private:
HWND m_hOwnerWnd;
HINSTANCE m_hInst;
};
#endif // KDIALOG_H_INCLUDED
</span>
Cpp文件的代码：
[cpp] view
plaincopy
<span style="font-size:16px;">#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]= "从这儿输入字符串." ;
BOOL CALLBACK KDialog::DialogProc(HWND hDlg,
UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_INITDIALOG :
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, "输入数据", 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, "内存对话框", -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++ = 0xFFFF;
*lpw++ = 0x0080; // button class
lpwsz = (LPWSTR) lpw;
nchar = 1+MultiByteToWideChar (CP_ACP, 0, "退出", -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++ = 0xFFFF;
*lpw++ = 0x0080; // button class atom
lpwsz = (LPWSTR) lpw;
nchar = 1+MultiByteToWideChar (CP_ACP, 0, "显示输入", -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++ = 0xFFFF;
*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;
}
</span>
外部调用的方法也很简单（把应用程序句柄和对话框的所有者窗口句柄传进来即可）：
[cpp] view
plaincopy
<span style="font-size:16px;"> KDialog dlg(m_hInst,m_hWnd);
dlg.DoModal();
</span>
上面创建的是模式对话框，下面是创建非模式对话框的代码：
[cpp] view
plaincopy
BOOL KDialog::DoModeless()
{
HGLOBAL hgbl;
LPDLGTEMPLATE lpdt;
LPDLGITEMTEMPLATE lpdit;
LPWORD lpw;
LPWSTR lpwsz;
LRESULT ret;
int nchar;
hgbl = GlobalAlloc(GMEM_ZEROINIT, 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, "内存对话框", -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++ = 0xFFFF;
*lpw++ = 0x0080; // button class
lpwsz = (LPWSTR) lpw;
nchar = 1+MultiByteToWideChar (CP_ACP, 0, "退出", -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++ = 0xFFFF;
*lpw++ = 0x0080; // button class atom
lpwsz = (LPWSTR) lpw;
nchar = 1+MultiByteToWideChar (CP_ACP, 0, "显示输入", -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++ = 0xFFFF;
*lpw++ = 0x0081; // edit class atom
*lpw++ = 0; // no creation data
GlobalUnlock(hgbl);
HWND hDlg = CreateDialogIndirect(m_hInst,
(LPDLGTEMPLATE) hgbl,
m_hOwnerWnd,
(DLGPROC) DialogProc);
if(NULL==hDlg)
return FALSE;
::ShowWindow(hDlg,SW_SHOW);
GlobalFree(hgbl);
return TRUE;
}
效果图如下：
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