{"id":315,"date":"2009-04-12T23:40:01","date_gmt":"2009-04-12T18:10:01","guid":{"rendered":"http:\/\/techtwaddle.net\/?p=315"},"modified":"2011-04-12T23:40:18","modified_gmt":"2011-04-12T18:10:18","slug":"applications-creating-a-simple-ui-application-for-windows-mobile-6-using-visual-studio-2005-part-2","status":"publish","type":"post","link":"https:\/\/techtwaddle.co.in\/blog\/2009\/04\/12\/applications-creating-a-simple-ui-application-for-windows-mobile-6-using-visual-studio-2005-part-2\/","title":{"rendered":"Applications: Creating a simple UI application for Windows Mobile 6 using Visual Studio 2005: Part 2"},"content":{"rendered":"
Ok now that we have our basic application up and running, lets make some changes. First, I want to change the right soft key from "HELP" to "Menu", somehow "HELP" is not very appealing. One more thing, I use the resource editor only to add new resources to the project, any further changes or modification I like to do it by manually editing the resource files (To do that, just right click on the .rc file and select "View Code").
\n<\/font><\/div>\n



\n<\/font><\/p>\n

If you open HelloWorld.cpp and in function WndProc<\/span> go to the case where WM_CREATE<\/span> is handled, you will see that the menu bar is getting created there using the SHCreateMenuBar <\/span>api. The nToolBarId member of SHMENUBARINFO <\/span>contains IDR_MENU<\/span>, which is the resource identifier of the menu bar. Now open HelloWorldppc.rc2 and you will see that the menu bar is defined as below:
\n<\/font><\/div>\n



\nIDR_MENU SHMENUBAR DISCARDABLE<\/span>

\nBEGIN<\/span>

\n    IDR_MENU_POPUP, <\/span>

\n    2,<\/span>

\n

\n    I_IMAGENONE, IDM_OK, TBSTATE_ENABLED, TBSTYLE_BUTTON | TBSTYLE_AUTOSIZE,<\/span>

\n    IDS_OK, 0, NOMENU,<\/span>

\n    <\/span>

\n    I_IMAGENONE, IDM_HELP, TBSTATE_ENABLED, TBSTYLE_DROPDOWN | TBSTYLE_AUTOSIZE,<\/span>

\n    IDS_HELP, 0, 0,<\/span>

\nEND<\/span>

\n

\n<\/font><\/p>\n

The first line says that IDR_MENU<\/span> is a menubar. Everything in between BEGIN <\/span>and END<\/span> defines the menu bar. The first line under BEGIN identifies the popup menu which will be displayed when the user clicks on the MENU. If your MENUBAR does not have any popup menu’s, then you can specify a value of 0 here. In this case, the popup menu that will be displayed here, when the user clicks on "Menu" is IDR_MENU_POPUP, which we will define later. "2" specifies that the menu bar will have two entries, one left soft key and one right soft key. The first entry after "2" defines the left soft key and the next entry defines the right softkey. You can see that the left entry is for "OK" and the right entry is for "HELP". We will not change the first entry. Lets modify the second entry so that it defines our new entry, which is "Menu". So we change
\n<\/font><\/div>\n



\n    I_IMAGENONE, IDM_HELP, TBSTATE_ENABLED, TBSTYLE_DROPDOWN | TBSTYLE_AUTOSIZE, <\/span>IDS_HELP, 0, 0,<\/span>

\n

\n<\/font><\/p>\n

to
\n<\/font><\/div>\n



\n       I_IMAGENONE, IDM_MENU, TBSTATE_ENABLED, TBSTYLE_DROPDOWN | TBSTYLE_AUTOSIZE, IDS_MENU, 0, 0,<\/span>

\n

\n<\/font><\/p>\n

This change is not absolutely necessary but I like to name my variables just right.
\n<\/font><\/div>\n



\n<\/font><\/p>\n

Now open resourceppc.h and make the same changes. Rename IDS_HELP<\/span> to IDS_MENU<\/span> and IDM_HELP<\/span> to IDM_MENU<\/span>. A few more changes and we are done. Open HelloWorld.rc and search for the string table that defines the value for IDS_HELP<\/span>. Will be something like:
\n<\/font><\/div>\n



\nSTRINGTABLE  <\/span>

\nBEGIN<\/span>

\n   .<\/span>

\n   .<\/span>

\n   IDS_HELP    "HELP"<\/span>

\nEND<\/span>

\n

\nChange this to:<\/span>

\n

\nSTRINGTABLE  <\/span>

\n BEGIN<\/span>

\n    .<\/span>

\n    .<\/span>

\n    IDS_MENU    "Menu"<\/span>

\n END<\/span>

\n

\n

\n<\/font><\/p>\n

The items under the popup menu will be defined in HelloWorld.rc file. Although you can define it .rc2 file as well, but by default it will be present in the .rc file.
\n<\/font><\/div>\n



\nIDR_MENU_POPUP MENU DISCARDABLE <\/span>

\nBEGIN<\/span>

\n    POPUP "Help"<\/span>

\n    BEGIN<\/span>

\n        MENUITEM "About",        IDM_HELP_ABOUT<\/span>

\n    END<\/span>

\nEND<\/span>

\n

\n<\/font><\/p>\n

This defines our original right soft key menu which is a popup. Change this entry so that "Menu" shows up instead of "HELP":
\n<\/font><\/div>\n



\nIDR_MENU_POPUP MENU DISCARDABLE <\/span>

\n BEGIN<\/span>

\n     POPUP "Menu"<\/span>

\n     BEGIN<\/span>

\n         MENUITEM "About",        IDM_HELP_ABOUT<\/span>

\n     END<\/span>

\n END<\/span>

\n

\n<\/font><\/p>\n

Thats it. The right soft key should now be renamed to "Menu". You might think that this is a lot of work just to rename a menu entry. But its not much. The changes in the .rc2 file were just for the sake of naming convention and you can leave that part if you wish but make sure that all your ID*_ macros are in sync.
\n<\/font><\/div>\n



\n<\/font><\/p>\n

Build the project and run. The application should now look like this:
\n<\/font><\/div>\n



\n\"\"

\n

\n<\/font><\/p>\n

Lets quickly add one more entry under Menu called "System Metric", which will show the screen width and height in a message box. Adding a menu entry is simple. Open HelloWorld.rc file where the popup items for the right menu are defined. They will be defined like this:
\n<\/font><\/div>\n



\nIDR_MENU_POPUP MENU DISCARDABLE <\/span>

\nBEGIN<\/span>

\n    POPUP "Menu"<\/span>

\n    BEGIN<\/span>

\n       MENUITEM "About",            IDM_HELP_ABOUT<\/span>

\n    END<\/span>

\nEND<\/span>

\n

\n<\/font><\/p>\n

Just add another MENUITEM <\/span>entry for "System Metric":
\n<\/font><\/div>\n



\nIDR_MENU_POPUP MENU DISCARDABLE <\/span>

\nBEGIN<\/span>

\n    POPUP "Menu"<\/span>

\n    BEGIN<\/span>

\n        MENUITEM "System Metric",    IDM_SYSTEM_METRIC<\/span>

\n        MENUITEM "About",            IDM_HELP_ABOUT<\/span>

\n    END<\/span>

\nEND<\/span>

\n

\n<\/font><\/p>\n

IDM_SYSTEM_METRIC<\/span> is the command (or simply a number) that will be sent to our application when the user selects it. So you need to define this in the resourceppc.h header file so that the compiler can find it. You can add a menu separator by adding MENUITEM SEPARATOR<\/span> as one of the items in the menu.
\n<\/font><\/div>\n



\n<\/font><\/p>\n

Add  "#define IDM_SYSTEM_METRIC 40003<\/span>" to resourceppc.h. I chose 40003 because that number wasn’t yet used in my header file. The number doesn’t matter, just make sure that the number you use is unique and is not used already in this or some other header file. In large projects with many resources this could get messy, manually keeping track of numbers. When creating resources using the resource editor these entries are automatically created and unique.
\n<\/font><\/div>\n



\n<\/font><\/p>\n

Now we need to handle this menu item. That is, what happens when the user clicks on it. When the user selects the menu item, a WM_COMMAND<\/span> will be sent to our application. This will end up in WndProc function. The LPARAM <\/span>and WPARAM <\/span>parameters will contain more information about which item in our application caused the WM_COMMAND<\/span> message to be sent. In the WndProc <\/span>function go the section which is handling WM_COMMAND.<\/span> Under WM_COMMAND<\/span> handling you will see that other messages like IDM_HELP_ABOUT<\/span> and ID_OK<\/span> are already being handled. This is where we need to add the entry for our IDM_SYSTEM_METRIC<\/span>. Create the following entry just after the IDM_OK<\/span> case:
\n<\/font><\/div>\n



\ncase IDM_SYSTEM_METRIC:<\/span>

\n{<\/span>

\n    int width = -1, height = -1;<\/span>

\n    WCHAR wOutStr[64] = L"";<\/span>

\n    WCHAR wCaption[16] = L"";<\/span>

\n

\n    width =  GetSystemMetrics(SM_CXSCREEN);<\/span>

\n    height = GetSystemMetrics(SM_CYSCREEN);<\/span>

\n

\n    if(!width || !height)<\/span>

\n    {<\/span>

\n        wsprintf(wOutStr, L"Failed to get system metrics.");<\/span>

\n        wsprintf(wCaption, L"Error");<\/span>

\n    }<\/span>

\n    else<\/span>

\n    {<\/span>

\n        wsprintf(wOutStr, L"System width :%d\\nSystem Height:%d", width, height);<\/span>

\n        wsprintf(wCaption, L"Info");<\/span>

\n    }<\/span>

\n

\n    MessageBox(hWnd, wOutStr, wCaption, MB_OK);<\/span>

\n

\n}<\/span>

\nbreak;<\/span>

\n

\n<\/font><\/p>\n

In the message handling I use the GetSystemMetrics<\/span> api to get the system width and system height values. If the api’s return error (zero) I contruct an error string otherwise I construct a string with the values I got and then show the string using a MessageBox. Simple.
\n<\/font><\/div>\n



\nThis is how the UI looks:<\/span>

\n

\n\"\"

\n

\nand,<\/span>

\n

\n

\n\"\"

\n
\nPart 1<\/a>
\nPart 3<\/a>

\n<\/font><\/p>\n","protected":false},"excerpt":{"rendered":"

Ok now that we have our basic application up and running, lets make some changes. First, I want to change the right soft key from "HELP" to "Menu", somehow "HELP" is not very appealing. One more thing, I use the resource editor only to add new resources to the project, any further changes or modification … Continue reading Applications: Creating a simple UI application for Windows Mobile 6 using Visual Studio 2005: Part 2<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[1],"tags":[],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p1ktFF-55","_links":{"self":[{"href":"https:\/\/techtwaddle.co.in\/blog\/wp-json\/wp\/v2\/posts\/315"}],"collection":[{"href":"https:\/\/techtwaddle.co.in\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techtwaddle.co.in\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techtwaddle.co.in\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/techtwaddle.co.in\/blog\/wp-json\/wp\/v2\/comments?post=315"}],"version-history":[{"count":1,"href":"https:\/\/techtwaddle.co.in\/blog\/wp-json\/wp\/v2\/posts\/315\/revisions"}],"predecessor-version":[{"id":316,"href":"https:\/\/techtwaddle.co.in\/blog\/wp-json\/wp\/v2\/posts\/315\/revisions\/316"}],"wp:attachment":[{"href":"https:\/\/techtwaddle.co.in\/blog\/wp-json\/wp\/v2\/media?parent=315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techtwaddle.co.in\/blog\/wp-json\/wp\/v2\/categories?post=315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techtwaddle.co.in\/blog\/wp-json\/wp\/v2\/tags?post=315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}