《Windows程序设计》之子窗口

LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam){static COLORREF crPrim[3]={RGB(255,0,0),RGB(0,255,0),RGB(0,0,255)};static HBRUSH hBrush[3],hBrushStatic;static HWND hwndScroll[3],hwndLabel[3],hwndValue[3],hwndRect;static int color[3],cyChar;static RECT rcColor;static TCHAR * szColorLabel[]={TEXT("Red"),TEXT("Green"),TEXT("Blue")};HINSTANCE hInstance;int i,cxClient,cyClient;TCHAR szBuffer[10];switch(message){case WM_CREATE://获取句柄hInstance=(HINSTANCE)GetWindowLong(hwnd,GWL_HINSTANCE);//创建一个静态的矩形hwndRect=CreateWindow(TEXT("static"),NULL,WS_CHILD|WS_VISIBLE|SS_WHITERECT,0,0,0,0,hwnd,(HMENU)9,hInstance,NULL);//创建三个滚动条控件for(i=0;i<3;i++){//创建，注意WS_TABTOP，这个加上后，可以使用tab；SBS_VERT是纵向滚动hwndScroll[i]=CreateWindow(TEXT("scrollbar"),NULL,WS_CHILD|WS_VISIBLE|WS_TABSTOP|SBS_VERT,0,0,0,0,hwnd,(HMENU)i,hInstance,NULL);//设置   滚动条控件  的范围，FALSE表示不重绘SetScrollRange(hwndScroll[i],SB_CTL,0,255,FALSE);//设置初始位置SetScrollPos(hwndScroll[i],SB_CTL,0,FALSE);//创建滚动条上方静态文本框，设置的(HMENU)为唯一id，后面经常用过hwndLabel[i]=CreateWindow(TEXT("static"),szColorLabel[i],WS_CHILD|WS_VISIBLE|SS_CENTER,0,0,0,0,hwnd,(HMENU)(i+3),hInstance,NULL);//创建滚动条下方显示数值的文本框hwndValue[i]=CreateWindow(TEXT("static"),TEXT("0"),WS_CHILD|WS_VISIBLE|SS_CENTER,0,0,0,0,hwnd,(HMENU)(i+6),hInstance,NULL);//这个地方应该是调用了回调函数//GWL_WNDPROC：获得窗口过程的地址，或代表窗口过程的地址的句柄。必须使用CallWindowProc函数调用窗口过程。 //暂时不清楚设置返回值有什么用OldScroll[i]=(WNDPROC)SetWindowLong(hwndScroll[i],GWL_WNDPROC,(LONG)ScrollProc);//创建三个具有指定颜色的逻辑刷子hBrush[i]=CreateSolidBrush(crPrim[i]);}hBrushStatic=CreateSolidBrush(GetSysColor(COLOR_BTNHIGHLIGHT));//系统字体的高度cyChar=HIWORD(GetDialogBaseUnits());return 0;case WM_SIZE://客户区长宽cxClient=LOWORD(lParam);cyClient=HIWORD(lParam);//设置矩形内容，在此是设置颜色SetRect(&rcColor,cxClient/2,0,cxClient,cyClient);//这个设置左侧放9个子窗口的区域的大小跟位置MoveWindow(hwndRect,0,0,cxClient/2,cyClient,TRUE);//设置大小，位置for(i=0;i<3;i++){MoveWindow(hwndScroll[i],(2*i+1)*cxClient/14,2*cyChar,cxClient/14,cyClient-4*cyChar,TRUE);MoveWindow(hwndLabel[i],(4*i+1)*cxClient/28,cyChar/2,cxClient/7,cyChar,TRUE);MoveWindow(hwndValue[i],(4*i+1)*cxClient/28,cyClient-3*cyChar/2,cxClient/7,cyChar,TRUE);}//把焦点设置到父窗口SetFocus(hwnd);return 0;case WM_SETFOCUS://设置焦点SetFocus(hwndScroll[idFocus]);return 0;case WM_VSCROLL://获取idi=GetWindowLong((HWND)lParam,GWL_ID);//判断按键switch(LOWORD(wParam)){                   //省略了一些}//设置位置SetScrollPos(hwndScroll[i],SB_CTL,color[i],TRUE);wsprintf(szBuffer,TEXT("%i"),color[i]);//设置滚动条下方的数字SetWindowText(hwndValue[i],szBuffer);//GCL_HBRBACKGROUND：替换与类有关的背景刷子的句柄。DeleteObject((HBRUSH)SetClassLong(hwnd,GCL_HBRBACKGROUND,(LONG)CreateSolidBrush(RGB(color[0],color[1],color[2]))));//重绘区域,TRUE表示重绘前先清除背景InvalidateRect(hwnd,&rcColor,TRUE);return 0;//当某个小窗口要重绘时，返回相应的刷子case WM_CTLCOLORSCROLLBAR:i=GetWindowLong((HWND)lParam,GWL_ID);return (LRESULT)hBrush[i];//静态文本重绘时，返回相应的刷子case WM_CTLCOLORSTATIC:i=GetWindowLong((HWND)lParam,GWL_ID);if(i>=3&&i<=8){SetTextColor((HDC)wParam,crPrim[i%3]);SetBkColor((HDC)wParam,GetSysColor(COLOR_BTNHIGHLIGHT));return (LRESULT)hBrushStatic;}break;//系统颜色更改时，重新创建hBrushStaticcase WM_SYSCOLORCHANGE:DeleteObject(hBrushStatic);hBrushStatic=CreateSolidBrush(GetSysColor(COLOR_BTNHIGHLIGHT));return 0;//清理的一些工作case WM_DESTROY:DeleteObject((HBRUSH)SetClassLong(hwnd,GCL_HBRBACKGROUND,(LONG)GetStockObject(WHITE_BRUSH)));for(i=0;i<3;i++)DeleteObject(hBrush[i]);DeleteObject(hBrushStatic);PostQuitMessage(0);return 0;}return DefWindowProc(hwnd,message,wParam,lParam);}LRESULT CALLBACK ScrollProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam){int id=GetWindowLong(hwnd,GWL_ID);switch(message){//按键操作case WM_KEYDOWN://实现tab的功能if(wParam==VK_TAB)SetFocus(GetDlgItem(GetParent(hwnd),(id+(GetKeyState(VK_SHIFT)<0?2:1))%3));break;case WM_SETFOCUS:idFocus=id;break;}return CallWindowProc(OldScroll[id],hwnd,message,wParam,lParam);}

里面有很多东西值得学习，滚动条控件的使用，按钮消息与父窗口的消息传递，id的获取，按钮颜色等的设置，整个的排版等，好多好多。

代码是COLORS1的部分，走了，回宿舍，不然就被关外面了。