Chapter seventh application of resources in Windows programming P157 7-8

Application experiment of resource in program design based on SDK

First, Experimental Purpose

1. Master the application of various resources and program design method of resource application.

Ii. contents of the experiment and Steps

Experimental tasks

1. Familiar with the creation process of menu resources;

2. Familiar with the creation of bitmap resources;

3. Familiar with the application of dialog box resources;

4. Be familiar with icon resources.

Experimental content

Loads an arbitrary bitmap in the center of a window, the bitmap size is One-fourth of the window area, and when you click the left mouse button or the up arrow on the keyboard, the bitmap moves up, and when you move to the top edge of the window, the window displays " no more moving up. " typeface, when you click the right mouse button or the down arrow on the keyboard, the bitmap moves down, and when you reach the bottom border of the window, the screen displays the word " no More moves down " .

Program code:

#include <windows.h>

Long WINAPI WndProc (HWND hwnd,uint iMessage,

UINT Wparam,long LParam); The message-handling function declaration.

BOOL Initwindowsclass (hinstance hinstance); Initializing a window class declaration

BOOL initwindows (hinstance hinstance, int ncmdshow); Initializing a window declaration

HWND Hwndmain; Defining window Handles

HDC hdc; Defining a device environment handle

HDC Hdcmem; Defining memory Handles

Hbitmap hBm; Defining a bitmap handle

BITMAP BM; Defining Bitmap Structure variables

int iy=80; Initial y-coordinate of the upper-left corner of the bitmap

int iwindowwidth,iwindowheight; Width and height of the window

Char cupwarn[]= "can no longer move upward"; Up warning string

Char cdownwarn[]= "can no longer move Down"; Down warning string

int WINAPI WinMain (hinstance hinstance,hinstance hprevinstance,

LPSTR lpcmdline,int nCmdShow)

{

MSG Message; Defining message Variables

Hbm=loadbitmap (hinstance, "Forest"); Loading bitmaps

GetObject (Hbm,sizeof (BITMAP), (LPVOID) &BM); Get bitmap Information

Iwindowwidth=2*bm.bmwidth; Get the width of the window

Iwindowheight=2*bm.bmheight; Get the height of the window

if (! Initwindowsclass (HINSTANCE))//Initialize window class

return FALSE;

if (! Initwindows (Hinstance,ncmdshow))//Initialization window

return FALSE;

while (GetMessage (&message,0,0,0))

{

TranslateMessage (&message); Message loops

DispatchMessage (&message);

}

return message.wparam;

}

Long WINAPI WndProc (HWND hwnd,uint imessage,uint wparam,long lParam)

{

Paintstruct PS; Defining structure variables that contain drawing information

Switch (iMessage)

{

Case WM_LBUTTONDOWN://Click left mouse button

iy=iy-10; Bitmap Height-10

InvalidateRect (hwnd,null,1); Refresh User Area

Break

Case Wm_rbuttondown://Click right mouse button

iy=iy+10; Bitmap height +10

InvalidateRect (hwnd,null,1); Refresh User Area

Break

Case WM_KEYDOWN:

Switch (WParam)

{

Case VK_UP://Press UP ARROW, Position-10

iy=iy-10;

Break

Case Vk_down://When the arrow is pressed, position +10

iy=iy+10;

Break

}

InvalidateRect (hwnd,null,1); Refresh User Area

Break

Case WM_CREATE://Initialize window message

HDC=GETDC (HWND); Get the device environment pointer

Hdcmem=createcompatibledc (HDC); Get Memory pointers

ReleaseDC (HWND,HDC); Remove device Environment pointer

Case WM_PAINT://Processing drawing messages

Hdc=beginpaint (HWND,&PS); Get the device environment pointer

if (IY>0&&IY<IWINDOWHEIGHT/2)//When the bitmap is complete in the window

{

SelectObject (HDCMEM,HBM); Select in memory handle

BitBlt (hdc,60,iy,bm.bmwidth,bm.bmheight,hdcmem,0,0,srccopy);//Output bitmap

}

else if (iy<=0)//when the upper bounds of the bitmap are outside the window

{

TextOut (hdc,0,0,cupwarn,sizeof (Cupwarn)); Output warning

}

else//When the lower border of the bitmap exceeds the window

{

TextOut (hdc,0,0,cdownwarn,sizeof (Cdownwarn)); Output warning

}

EndPaint (HWND,&PS); Output environment handle

Break

Case Wm_destroy://Close window message

DeleteObject (HBM); To delete a memory handle

PostQuitMessage (0);

return 0;

Default

Return (DefWindowProc (Hwnd,imessage,wparam,lparam));

}

return 0;

}

BOOL initwindows (hinstance hinstance, int ncmdshow)

{

HWND hwnd;

Hwnd=createwindow ("bitmapinstance",//window class name

"Bitmap Display Instance Program",//title bar name

Ws_overlappedwindow,//Window style

Cw_usedefault,//window upper-left corner coordinates

0,

Iwindowwidth,//With custom height and width

Iwindowheight,

NULL,//No parent window

NULL,//No Menu

HINSTANCE,//Current application instance handle

NULL); Pointer to a parameter passed to the window

if (!hwnd)//Create failed

return FALSE;

Hwndmain=hwnd; Pay a value to the global window handle

ShowWindow (hwnd,ncmdshow); Display window

UpdateWindow (HWND); Refresh User Area

return TRUE;

}

BOOL Initwindowsclass (hinstance hinstance)

{

Wndclass Wndclass;

wndclass.cbclsextra=0; Windowless class Extension

wndclass.cbwndextra=0; No window instance extension

Wndclass.hbrbackground= (Hbrush) (Getstockobject (White_brush)); Background is white

Wndclass.hcursor=loadcursor (Null,idc_arrow); The cursor is the arrow

Wndclass.hicon=loadicon (null,idi_application); Using the default icon

Wndclass.hinstance=hinstance; Current instance

Wndclass.lpfnwndproc=wndproc; Message-handling functions

Wndclass.lpszclassname= "Bitmapinstance"; Window class name

Wndclass.lpszmenuname= "Menu"; Define menu for

wndclass.style=0; Default window Style

Return registerclass (&wndclass); return window Registration value

The results of the program run :

Third, the experimental results

Through this experiment, I have mastered the application of various resources and application of resources program design method, familiar with the menu resources, Bitmap Resources, dialog resources, and icon resource creation and application process.

Chapter seventh application of resources in Windows programming P157 7-8