Resource Files: Pictures

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Mar 6th, 2001, 10:45 AM
SteveCRM

I know how to use menus....now how do I use pictures?
Mar 6th, 2001, 12:51 PM
Technocrat

If you mean bitmaps you can just import them in the resource editor, if you are using MSVC. If you arent then I am not sure how exactly to do it.
Mar 6th, 2001, 12:58 PM
SteveCRM

I mean like in the code you need to add SetMenu...is there a command for bitmaps?
Mar 6th, 2001, 01:00 PM
Technocrat

So you want to display a bitmap on an object?
What kind of object? Picturebox? Static?

Or add a picture to your menu?
Mar 6th, 2001, 01:05 PM
SteveCRM

ooooh... didn't know there were so many choices :)

I'd like to know how to add them to menus and picture boxes.

Thanks :D
Mar 6th, 2001, 01:08 PM
Technocrat

Well I am not sure how to add to a menu, because I have never done it before, but I know it can be done.

How are you creating your picture box?
Mar 6th, 2001, 01:12 PM
SteveCRM

you know what... scratch that idea, I know how to make Static boxes....so how would I add pictures to them?

Sorry wasn't thinking before :p
Mar 6th, 2001, 01:15 PM
Technocrat

With a static box, you will have to use DCs and BitBlt. Are you familure with those?
Mar 6th, 2001, 01:16 PM
SteveCRM

not really....
Mar 6th, 2001, 01:17 PM
Technocrat

Ok, well this is a long process to explain, are you up to it?
Mar 6th, 2001, 01:20 PM
SteveCRM

Sure...I'm off of school today due to the snow! :D

(Thanks by the way! :D )
Mar 6th, 2001, 01:33 PM
Technocrat

No problem, ok here it goes:

Here is a VB world tutorial if you get stuck. I know its in VB but all the code is about the same.

http://www.vb-world.net/graphics/lander/

Ok first thing you need to do is load your bitmap into memory, or a DC (Device Handle).

I am writing this free hand so there might be spelling or ; errors :)

Code:

HDC hdc; //File that will hold the bitmap in memory hdc = CreateCompatibleDC(NULL); //Creates a space in memory

Ok now we have the DC setup now its time to get the bitamp. You will need to have a VAR with your instance, ie hInstance.

Code:

HBITMAP hBitmap; //This will hold the Bitmap so we can load it into the DC //If you have the bitmap loaded as a resource hBitmap = (HBITMAP)SelectObject(hdc, LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_YOURBITMAP))); //What we did is load the bitmap from the resource editor to the VAR hBitmap, then move it to the DC using SelectObject. //Little error checking if ((!hdc) || (!hBitmap)) MessageBox(NULL,"ERROR","ERROR",NULL);

Its important that when you go to exit your program, or you are COMPLETELY done with them, you kill the DC and the Bitmap from memory or else you have a leak.

Code:

DeleteDC(hdc); DeleteObject(hBitmap);

Ok now come BitBlt, I need a sec to look something up so I will post the rest in a sec
Mar 6th, 2001, 01:44 PM
SteveCRM

I get these errors:

Code:

C:\Windows\Profiles\Steve\Desktop\C c++\Pictures\Pictures.cpp(17) : error C2065: 'hdc' : undeclared identifier C:\Windows\Profiles\Steve\Desktop\C c++\Pictures\Pictures.cpp(18) : error C2065: 'hBitmap' : undeclared identifier C:\Windows\Profiles\Steve\Desktop\C c++\Pictures\Pictures.cpp(48) : error C2065: 'IDB_BITMAP1": undeclared identifier
Mar 6th, 2001, 01:45 PM
Technocrat

Let me see your code
Mar 6th, 2001, 01:52 PM
Technocrat

Ok BitBlting, here comes the hard part and the part that will drive you insane if you have anything wrong.

You will need to have the HDC of the device you want to paint to. You can use GetDC to get it or you can catch the WM_PAINT message and use PAINTSTRUCT. Since this is your first time you should just use GetDC for right now.

Example:

Code:

HDC hdc_topaint; hdc_topaint = GetDC(hWndOfTheDeviceToPaint);

Once you have that you need to know the size of the bitmap and the size of the device you are painting to. You can get that using a number of different ways but for now just write the sizes down when you make your static object, and most bitmap editors will give you the size. I would make the bitmap the same size as your static object to make your life easier for right now.

Ok now BitBlt:

Code:

BitBlt(hdc_topaint, Xdest, Ydest, Width, Height, hdc, Xsrc, Ysrc, SRCOPY); //hdc_topaint is the hdc of the device to paint to //Xdest, put the X position to start painting at, you will prob use 0 most of the time //Ydest, put the Y position to start painting at, you will prob use 0 most of the time //Width, this is the exact width of the static device you are painting to //Height, this is the exact height of the static device you are painting to //hdc, this is the DC of the bitmap we loaded into memory //Xsrc, put the X position to start copying the bitmap from, you will prob use 0 most of the time //Ysrc, put the Y position to start copying the bitmap from, you will prob use 0 most of the time //SRCOPY, this is the raster code we will use, this means exact copy from bitmap to device. There are a bunch of others that do different things, just look up BitBlt in the MSDN.

Now for some bad news, the image is not "actually" on that object. What the means is that each time the object is refreshed it will disapear. I can tell you how to fix that, but try to get it up there first then we will work on the refresh.
Mar 6th, 2001, 01:52 PM
SteveCRM

PHP Code:

// Pictures in Static Boxes // By Steve Mack // March 6, 2001 (06.03.01) #include <windows.h> HWND ghWnd_Main; // this is the main window // } HWND ghWnd_ExitButton; HWND ghWnd_label; HWND ghWnd_Hello; LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { switch(uMsg) { case WM_CLOSE: DestroyWindow(ghWnd_Main); // Destroy the main window DeleteDC(hdc); DeleteObject(hBitmap); return 0; case WM_DESTROY: PostQuitMessage(0); // Quit the application DeleteDC(hdc); DeleteObject(hBitmap); return 0; case WM_COMMAND: if(LOWORD(wParam) == BN_CLICKED && (HWND)lParam == ghWnd_ExitButton) { PostQuitMessage(0); } if(LOWORD(wParam) == BN_CLICKED && (HWND)lParam == ghWnd_Hello) { SendMessage(ghWnd_label, WM_SETTEXT, 0, (LPARAM) (LPCTSTR) "Hello World!"); } return 0; } return DefWindowProc(hWnd, uMsg, wParam, lParam); // Not handled - let the system deal with it } int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { WNDCLASSEX wcxMyClass; HDC hdc; //File that will hold the bitmap in memory hdc = CreateCompatibleDC(NULL); //Creates a space in memory HBITMAP hBitmap; //This will hold the Bitmap so we can load it into the DC //If you have the bitmap loaded as a resource hBitmap = (HBITMAP)SelectObject(hdc, LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP1))); //What we did is load the bitmap from the resource editor to the VAR hBitmap, then move it to the DC using SelectObject. //Little error checking if ((!hdc) || (!hBitmap)) { MessageBox(NULL,"ERROR","ERROR",NULL); } wcxMyClass.cbSize = sizeof(WNDCLASSEX); // Size of structure in bytes wcxMyClass.style = 0; // Extra style information wcxMyClass.lpfnWndProc = WndProc; // Pointer to window procedure wcxMyClass.cbClsExtra = 0; // Extra bytes in class definition wcxMyClass.cbWndExtra = 0; // Extra bytes for each window wcxMyClass.hInstance = hInstance; // Instance handle for the class wcxMyClass.hIcon = NULL; // Default icon - use system wcxMyClass.hCursor = LoadCursor(NULL, IDC_ARROW); // Load the system arrow wcxMyClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1); // Background brush wcxMyClass.lpszMenuName = NULL; // Menu name [MAKEINTRESOURCE(IDM_MAINMENU)] - none here wcxMyClass.lpszClassName = "TESTCLASS"; // Class name wcxMyClass.hIconSm = NULL; // Small icon RegisterClassEx(&wcxMyClass); // Register the class ghWnd_Main = CreateWindow("TESTCLASS", "Steve's Program!", \ WS_OVERLAPPEDWINDOW, 100, 100, 300, 300, \ NULL, NULL, hInstance, NULL); if(ghWnd_Main) { ghWnd_ExitButton = CreateWindow("Button", "E&xit", WS_CHILD | WS_VISIBLE, 100, 200, 100, 30, ghWnd_Main, NULL, hInstance, NULL); ghWnd_label = CreateWindow("Static", "&What Will I Say?", WS_CHILD | WS_VISIBLE, 50, 10, 200, 30, ghWnd_Main, NULL, hInstance, NULL); ShowWindow(ghWnd_Main, nCmdShow); // Show using the specific show style } ///////////////////////// // Handle message loop // ///////////////////////// MSG msg; while(GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); // Translate keycode messages DispatchMessage(&msg); // Send to the window } UnregisterClass("TESTCLASS", hInstance); // Unregister our window class return msg.wParam; // msg.wParam contains the code passed to PostQuitMessage() }

(I have included the bitmap resource file and the resource header)
Mar 6th, 2001, 02:18 PM
Technocrat

Ah ok, you need to move
HDC hdc;
HBITMAP hBitmap;
to be global so move them under
HWND ghWnd_Hello;
Mar 6th, 2001, 02:19 PM
Technocrat

You also need to include your resource header file so you can use IDB_BITMAP1

#include "resource.h" is the most common header for the resources
Mar 6th, 2001, 02:28 PM
SteveCRM

errors:

Code:

C:\Windows\Profiles\Steve\Desktop\C c++\Pictures\Pictures.cpp(14) : error C2501: 'hdc' : missing storage-class or type specifiers C:\Windows\Profiles\Steve\Desktop\C c++\Pictures\Pictures.cpp(14) : error C2040: 'hdc' : 'int' differs in levels of indirection from 'struct HDC__ *' C:\Windows\Profiles\Steve\Desktop\C c++\Pictures\Pictures.cpp(14) : error C2440: 'initializing' : cannot convert from 'struct HDC__ *' to 'int' This conversion requires a reinterpret_cast, a C-style cast or function-style cast C:\Windows\Profiles\Steve\Desktop\C c++\Pictures\Pictures.cpp(21) : error C2065: 'hBitmap' : undeclared identifier

Code:

Code:

// Pictures in Static Boxes // By Steve Mack // March 6, 2001 (06.03.01) #include <windows.h> #include "resource.h" HWND ghWnd_Main; // this is the main window // } HWND ghWnd_ExitButton; HWND ghWnd_label; HWND ghWnd_Hello; HDC hdc; //File that will hold the bitmap in memory hdc = CreateCompatibleDC(NULL); //Creates a space in memory LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { switch(uMsg) { case WM_CLOSE: DestroyWindow(ghWnd_Main); // Destroy the main window DeleteDC(hdc); DeleteObject(hBitmap); return 0; case WM_DESTROY: PostQuitMessage(0); // Quit the application DeleteDC(hdc); DeleteObject(hBitmap); return 0; case WM_COMMAND: if(LOWORD(wParam) == BN_CLICKED && (HWND)lParam == ghWnd_ExitButton) { PostQuitMessage(0); } if(LOWORD(wParam) == BN_CLICKED && (HWND)lParam == ghWnd_Hello) { MessageBox(hWnd, "Hello World", "...", MB_OK); } return 0; } return DefWindowProc(hWnd, uMsg, wParam, lParam); // Not handled - let the system deal with it } int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { WNDCLASSEX wcxMyClass; HBITMAP hBitmap; //This will hold the Bitmap so we can load it into the DC //If you have the bitmap loaded as a resource hBitmap = (HBITMAP)SelectObject(hdc, LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP1))); //What we did is load the bitmap from the resource editor to the VAR hBitmap, then move it to the DC using SelectObject. //Little error checking if ((!hdc) || (!hBitmap)) { MessageBox(NULL,"ERROR","ERROR",NULL); } wcxMyClass.cbSize = sizeof(WNDCLASSEX); // Size of structure in bytes wcxMyClass.style = 0; // Extra style information wcxMyClass.lpfnWndProc = WndProc; // Pointer to window procedure wcxMyClass.cbClsExtra = 0; // Extra bytes in class definition wcxMyClass.cbWndExtra = 0; // Extra bytes for each window wcxMyClass.hInstance = hInstance; // Instance handle for the class wcxMyClass.hIcon = NULL; // Default icon - use system wcxMyClass.hCursor = LoadCursor(NULL, IDC_ARROW); // Load the system arrow wcxMyClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1); // Background brush wcxMyClass.lpszMenuName = NULL; // Menu name [MAKEINTRESOURCE(IDM_MAINMENU)] - none here wcxMyClass.lpszClassName = "TESTCLASS"; // Class name wcxMyClass.hIconSm = NULL; // Small icon RegisterClassEx(&wcxMyClass); // Register the class ghWnd_Main = CreateWindow("TESTCLASS", "Steve's Program!", \ WS_OVERLAPPEDWINDOW, 100, 100, 300, 300, \ NULL, NULL, hInstance, NULL); if(ghWnd_Main) { ghWnd_ExitButton = CreateWindow("Button", "E&xit", WS_CHILD | WS_VISIBLE, 100, 200, 100, 30, ghWnd_Main, NULL, hInstance, NULL); ghWnd_label = CreateWindow("Static", "&What Will I Say?", WS_CHILD | WS_VISIBLE, 50, 10, 200, 30, ghWnd_Main, NULL, hInstance, NULL); ShowWindow(ghWnd_Main, nCmdShow); // Show using the specific show style } ///////////////////////// // Handle message loop // ///////////////////////// MSG msg; while(GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); // Translate keycode messages DispatchMessage(&msg); // Send to the window } UnregisterClass("TESTCLASS", hInstance); // Unregister our window class return msg.wParam; // msg.wParam contains the code passed to PostQuitMessage() }
Mar 6th, 2001, 03:13 PM
Technocrat

Ummm........HEHE you can do this
hdc = CreateCompatibleDC(NULL); //Creates a space in memory
here move it back and put
HBITMAP hBitmap; //This will hold the Bitmap so we can load it into the DC
there
Mar 6th, 2001, 03:20 PM
SteveCRM

Okay no errors, but no picture either...do I have to change the declaration of the static box?

Code:

ghWnd_label = CreateWindow("Static", "Picture", WS_CHILD | WS_VISIBLE, 50, 10, 200, 30, ghWnd_Main, NULL, hInstance, NULL);
Mar 6th, 2001, 03:24 PM
Technocrat

Try this

Code:

ghWnd_label = CreateWindowEx(WS_EX_NOPARENTNOTIFY, "Static", NULL, WS_CHILD | SS_REALSIZEIMAGE, 50, 10, 200, 20, ghWnd_Main, NULL, hInstance, NULL);
Mar 6th, 2001, 03:25 PM
Technocrat

I dont see your BitBlt, am I missing it?
Mar 6th, 2001, 03:26 PM
SteveCRM

how would I use bitblt?
Mar 6th, 2001, 03:28 PM
Technocrat

I explained how to use it a few posts up.

Put it under your Hello button just as a test
Mar 6th, 2001, 03:39 PM
SteveCRM

Oh I'm sorry I didn't see you posted twice there!

still doesn't show up though :confused:
Mar 6th, 2001, 04:07 PM
Technocrat

Can you zip you entire project dir and post it
Mar 6th, 2001, 05:50 PM
SteveCRM

ITs a little too big...I'll email it.
What's your email?
Mar 6th, 2001, 05:51 PM
Technocrat

[email protected]
Mar 6th, 2001, 06:02 PM
SteveCRM

Sent :D
Mar 6th, 2001, 06:03 PM
Technocrat

Got it I am looking at it right now
Mar 6th, 2001, 06:18 PM
Technocrat

Ok first of you did not put in BitBlt, that is what puts the Image on the screen for you, everything else just gets it ready.

I maked all the changes I think

Code:

// Pictures in Static Boxes // By Steve Mack // March 6, 2001 (06.03.01) #include <windows.h> #include "resource.h" HWND ghWnd_Main; // this is the main window HWND ghWnd_ExitButton; HWND ghWnd_label; HWND ghWnd_Hello; HDC hdc; //File that will hold the bitmap in memory HBITMAP hBitmap; //This will hold the Bitmap so we can load it into the DC LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { switch(uMsg) { case WM_CLOSE: DeleteDC(hdc); //<----------------Change DeleteObject(hBitmap); //<----------------Change DestroyWindow(ghWnd_Main); // Destroy the main window return 0; case WM_DESTROY: DeleteDC(hdc); //<----------------Change DeleteObject(hBitmap); //<----------------Change PostQuitMessage(0); // Quit the application return 0; case WM_COMMAND: if(LOWORD(wParam) == BN_CLICKED && (HWND)lParam == ghWnd_ExitButton) { PostQuitMessage(0); } //<----------------Changed To Be Used For BitBlt if(LOWORD(wParam) == BN_CLICKED && (HWND)lParam == ghWnd_Hello) { HDC hdc_label; hdc_label = GetDC(ghWnd_label); BitBlt(hdc_label, 0, 0, 200, 50, hdc, 0, 0, SRCCOPY); } return 0; } return DefWindowProc(hWnd, uMsg, wParam, lParam); // Not handled - let the system deal with it } int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { WNDCLASSEX wcxMyClass; hdc = CreateCompatibleDC(NULL); //Creates a space in memory //HBITMAP hBitmap; //<------------Delete //If you have the bitmap loaded as a resource hBitmap = (HBITMAP)SelectObject(hdc, LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_BITMAP1))); //What we did is load the bitmap from the resource editor to the VAR hBitmap, then move it to the DC using SelectObject. //Little error checking if ((!hdc) || (!hBitmap)) { MessageBox(NULL,"ERROR","ERROR",NULL); } wcxMyClass.cbSize = sizeof(WNDCLASSEX); // Size of structure in bytes wcxMyClass.style = 0; // Extra style information wcxMyClass.lpfnWndProc = WndProc; // Pointer to window procedure wcxMyClass.cbClsExtra = 0; // Extra bytes in class definition wcxMyClass.cbWndExtra = 0; // Extra bytes for each window wcxMyClass.hInstance = hInstance; // Instance handle for the class wcxMyClass.hIcon = NULL; // Default icon - use system wcxMyClass.hCursor = LoadCursor(NULL, IDC_ARROW); // Load the system arrow wcxMyClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1); // Background brush wcxMyClass.lpszMenuName = NULL; // Menu name [MAKEINTRESOURCE(IDM_MAINMENU)] - none here wcxMyClass.lpszClassName = "TESTCLASS"; // Class name wcxMyClass.hIconSm = NULL; // Small icon RegisterClassEx(&wcxMyClass); // Register the class ghWnd_Main = CreateWindow("TESTCLASS", "Steve's Program!", \ WS_OVERLAPPEDWINDOW, 100, 100, 300, 300, \ NULL, NULL, hInstance, NULL); if(ghWnd_Main) { ghWnd_ExitButton = CreateWindow("Button", "E&xit", WS_CHILD | WS_VISIBLE, 100, 200, 100, 30, ghWnd_Main, NULL, hInstance, NULL); //<----------Made Bigger ghWnd_label = CreateWindowEx(WS_EX_NOPARENTNOTIFY, "Static", NULL, WS_CHILD | SS_REALSIZEIMAGE, 50, 10, 200, 50, ghWnd_Main, NULL, hInstance, NULL); //<----------Added To Be Used For A Test ghWnd_Hello = CreateWindow("Button", "BitBlt", WS_CHILD | WS_VISIBLE, 100, 230, 100, 30, ghWnd_Main, NULL, hInstance, NULL); ShowWindow(ghWnd_Main, nCmdShow); // Show using the specific show style ShowWindow(ghWnd_label, nCmdShow); //<----------Added } ///////////////////////// // Handle message loop // ///////////////////////// MSG msg; while(GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); // Translate keycode messages DispatchMessage(&msg); // Send to the window } UnregisterClass("TESTCLASS", hInstance); // Unregister our window class return msg.wParam; // msg.wParam contains the code passed to PostQuitMessage() }
Mar 6th, 2001, 06:23 PM
Technocrat

Bad Me you should change/add

Code:

if(LOWORD(wParam) == BN_CLICKED && (HWND)lParam == ghWnd_Hello) { HDC hdc_label; hdc_label = GetDC(ghWnd_label); BitBlt(hdc_label, 0, 0, 200, 50, hdc, 0, 0, SRCCOPY); DeleteDC(hdc_label); }
Mar 6th, 2001, 06:26 PM
SteveCRM

Thats perfect! Thank you so much for all of your help! :D :D :D :D

(sorry it took so long :) )
Mar 6th, 2001, 06:28 PM
Technocrat

No prob, glad to help, but remember what I said earlier, a BitBlt image will not stay on when the window gets refreshed, unless you make it stay.