This is the last time the TAB interface switch a problem, because eventually failed to have a suitable plan and decided to try the super class, because it is the only way of dealing with the WM_CREATE message handler.
The code

 # pragma once 
# include "framework. H" 
HINSTANCE UIHINST 
HWND=HWND; 
WNDPROC EXTTOLD; 
Typedef struct tagEXT 
{//
HWND=HWND;//handle of the owner window 
BOOL x1;//default is 185 
BOOL y1.//default is 170 
BOOL x2. 
BOOL y2. 
HBRUSH style; 
UINT styleU; 
WNDPROC lpfnWndProc; 
Int cbClsExtra; 
Int cbWndExtra; 
HINSTANCE HINSTANCE, 
HICON HICON; 
HCURSOR HCURSOR; 
LPCWSTR lpszMenuName; 
LPCWSTR lpszClassName; 
} EXT_PARAM; 
//static would m_strInput XFFFFF [0]=L "";//declare variables input box 
# define IDS_TEXT1 0 x200 
# define IDB_BT1 0 x199 
LRESULT a CALLBACK EXTUIProc (HWND HWND, UINT message, WPARAM WPARAM, LPARAM LPARAM)//STR=WCS, must be converted to Unicode 
{

//the RECT rc; 
//char prompt [40]. 
//int len=wcslen (m_strInput); 
The switch (the message) 
{

Case WM_CREATE message handler: 
{
MessageBox (0, L "when you see this message, it shows that the window to create a success", "L" super class ", 0). 
break; 
} 
break; 
Default: 
break; 
} 

Return CallWindowProc (EXTUIProc HWND, message, wParam, lParam); 
} 


Int EXTUI (
The HWND HWND,//handle of the owner window 
BOOL x1, 
BOOL y1, 
BOOL x2, 
BOOL y2 
//LPWSTR in, 
) 
{
Modifed WNDCLASSEX extwindow; 
: : GetClassInfoEx (hInstance, L "extwin", & amp; Extwindow); 
//save the original controls the default message handler 
EXTTOLD=extwindow. LpfnWndProc; 
//set to replace message processing function 
Extwindow. LpfnWndProc=EXTUIProc; 
//specify the new window class name 
Extwindow. LpszClassName=L "extwindow"; 
//set the structure size 
Extwindow. CbSize=sizeof (modifed WNDCLASSEX); 
//register new information 
RegisterClassEx (& amp; Extwindow); 
//modifed WNDCLASSEX wndclass={0}; 
The static HFONT HFONT; 
UIHINST=hInstance; 
CON_PARAM BTN={0}; 
BTN. HWnd=hWnd; 

HWND=CreateWindowEx (NULL, extwindow lpszClassName, L "EXTUI," 
WS_CHILD, x1, y1, x2, y2, HWND, NULL, hInstance, 0); 

ShowWindow (HWND, SW_SHOW); 
UpdateWindow (hWnd); 

//return 0; 
return -1; 
} 

In the main window after

 EXTUI (x, y, RCX, rcy);//show 

The above code, to achieve a child window.
But as the chart

The child window has not been completely created!
All code, what is the mistake?

CodePudding user response:

BOOL x1;//default is 185
BOOL y1.//default is 170
BOOL x2.
BOOL y2.
Why is a BOOL?

CodePudding user response:

HWND=CreateWindowEx (NULL, extwindow lpszClassName, L "EXTUI,"
WS_CHILD, x1, y1, x2, y2, HWND hParentWnd, NULL, hInstance, 0);

CodePudding user response:

//Win32Tab. CPP: Defines the entry point for the application. The
//

# include "stdafx. H"
# include "resource. H"

# define MAX_LOADSTRING 100

//Global Variables:
HINSTANCE hInst,//the current instance
TCHAR szTitle [MAX_LOADSTRING];//The title bar text
TCHAR szWindowClass [MAX_LOADSTRING];//The title bar text
//
# define PAGES 3
The HWND g_pages [PAGES];
Int g_PageNow=0;
The HWND g_btn1;
The HWND g_btn2;
//Foward declarations of functions provides the included this code in the module:
The ATOM MyRegisterClass (HINSTANCE HINSTANCE);
BOOL InitInstance (HINSTANCE, int);
LRESULT a CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM);
LRESULT a CALLBACK About (HWND, UINT, WPARAM, LPARAM);

Int APIENTRY WinMain (HINSTANCE HINSTANCE,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
Int nCmdShow)
{
//TODO: Place code here.
MSG MSG.
HACCEL hAccelTable;

//Initialize global strings
LoadString (hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString (hInstance, IDC_WIN32TAB, szWindowClass, MAX_LOADSTRING);
MyRegisterClass (hInstance);

//Perform application initialization:
if (! InitInstance (hInstance, nCmdShow))
{
return FALSE;
}

HAccelTable=LoadAccelerators (hInstance, LPCTSTR IDC_WIN32TAB);

//the Main message loop:
While (GetMessage (& amp; MSG, NULL, 0, 0))
{
if (! TranslateAccelerator (MSG. The HWND hAccelTable, & amp; MSG))
{
TranslateMessage (& amp; MSG);
DispatchMessage (& amp; MSG);
}
}

Return MSG. WParam;
}
# define MainWidth 100
//
BOOL CALLBACK PageProc1 (HWND hwndDlg, UINT uMsg, WPARAM WPARAM, LPARAM LPARAM)
{
The RECT rc;
HDC HDC.
HBRUSH br;
//POINT pt;
//char prompt [40].
//
The switch (uMsg)
{
Case WM_INITDIALOG:
GetClientRect (hwndDlg, & amp; Rc);
Rc. Left +=MainWidth;
Rc. Right +=MainWidth;
MoveWindow (hwndDlg, rc. Left, rc. Top, rc, right - rc. Left, rc. The bottom - rc. Top, TRUE);
return TRUE;
Case WM_ERASEBKGND:
nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull