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Questions tagged [hbitmap]

A handle to a bitmap (one of Windows Data Types)

HBITMAP is pointer to any type. But usually it is used for pointing on BITMAP object (one of Windows Data Types). See it's declaration:

typedef HANDLE HBITMAP; // see WinDef.h
typedef PVOID HANDLE;   // see WinNT.h
typedef void *PVOID;    // see WinNT.h
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c++ compiler returning undefined reference when referencing "CreateBitmap()"

I am very new to c++ and I cant seem to get this code to work: #include #include using namespace std; int main() { HBITMAP hbm = CreateBitmap(100, 100, 1, 24, NULL); return 0; } The console outputs: "undefined reference…
Dusty Berkley
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What is pixel format of HBITMAP when i get bitmap info with GetBitmapBits?

I have HBITMAP hBitmap. I use GetBitmapBits(hbitmap, width * height, buffer); what is the pixel format written in buffer? Thanks.
Hayri Uğur Koltuk
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C: Trouble when trying to comvert HBITMAP into .bmp file

I am creating a function to save a screenshot into a .bmp file, I've managed to save the screen into an HBITMAP but I'm having trouble when saving it. I would appreciate some help. Here is the header with the function: #include #include…
HackSh00t
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Create device-independent bitmap without allocating memory

This is what I currenty do to load images in my application: auto b = ::FreeImage_Load(type, path.c_str()); void *bits; auto hbmp = CreateDIBSection( dc, FreeImage_GetInfo(bitmap), DIB_RGB_COLORS, &bits, 0, …
liew
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Creating 24-bit BITMAP in Winapi

I'm using the following code in order to convert my ImageMagick image to 32-bit HBITMAP: BITMAP bitmap; std::memset(&bitmap, 0, sizeof(bitmap)); bitmap.bmType = 0; bitmap.bmWidth = image->image()->columns; bitmap.bmHeight =…
liew
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Generic GDI+ Error when saving hBitmap as Bitmap

I am writing my own DIB/BMP decoder (I know there are already others, but I'm learning about image processing) and I have managed to store the pixels in a pointer and get the relevant dimensions for writing a hBitmap, but this error keeps turning…
user646265
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SetBitmapBits not setting Captured HBITMAP on Window

I want to get a 500x500 HBITMAP of my screen from 0x0 (top-left) and draw it on my window. Here goes my code. SaveBitmap() Saves the HBITMAP and its working Fine. int scrnw = 500; int scrnh = 500; HDC shdc=GetWindowDC(NULL); HWND…
Neel Basu
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Displaying a transferred HBITMAP in a picture control

I have a camera which has a library developed in C# and a client application written in C++ 6. I have created a C# COM wrapper to link the two systems together and it is working quite well. In the C# COM wrapper I have a System.Drawing.Bitmap object…
Karl M
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CreateDIBSection in MFC and rendering using picture control

I'm creating a DIB Section in MFC using the call CreateDIBSection. I get a HBITMAP from the call which I pass onto another dialog in my MFC Project. In the other dialog I'm using CStatic::SetBitmap(HBITMAP) call to render the bitmap. But for some…
athlon2005
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How to get RGBQUAD from HBITMAP?

I'm currently studying windows programming and writing a small image searching program. I want to get (R, G, B) data of (x, y)pixel when I have HBITMAP handle of the image. So, I tried to write something like this //already have HBITMAP. struct…
Chanwoo Ahn
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Saving image to clipboard (from Javascript to C++)

I am currently working on saving an image to clipboard. The base64 data comes from the browser (base64) passed through WebSocket and handled by a C++ app. My issue is on the C++ side converting the base64 code to byte array to HBITMAP to BITMAP…
Ronnie
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Unable to pass System.Drawing.Bitmap to C++ DLL

I'm writing a DLL in C++ to search a subpicture in a Bitmap. When the C++ Part is executed, the HBITMAP is not valid. Here is my code: C#: [System.Runtime.InteropServices.DllImport("FindSubPicture.dll", EntryPoint = "FindSubPictures",…
Jan021981
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Load Image from pointer in CUDA with export of dll

I am new to this kind of stuff. I'm trying to create a function which is equivalent to the histogram function of an image. I am using windows forms application to show the histogram (and load the image) and CUDA/c++ to make the histogram. I am…
Greşanu Emanuel - Vasile
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CImage memory leak?

I have been trying to use screenshots stored in a HBITMAP and outputting this stored as a PNG image. However, the code appears to have a memory leak in it, as memory does not appear to be freed up correctly. void saveAsPNG(HBITMAP h) { CImage…
Alex
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Retrieve remote bitmap, using HBITMAP handle in C#

I have a MarshalByRefObject which I needed to serialize and store (in a database), so I could deserialize and reference it later. I have chosen to approach this differently: right now I am running a Windows Service which simply keeps the…
Waldo Spek
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